diff --git a/README.md b/README.md
index fad481f..e1eb676 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# openrtb [![Go Reference](https://pkg.go.dev/badge/github.com/prebid/openrtb/v19.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19) [![Test](https://github.com/prebid/openrtb/actions/workflows/test.yml/badge.svg)](https://github.com/prebid/openrtb/actions/workflows/test.yml)
+# openrtb [![Go Reference](https://pkg.go.dev/badge/github.com/prebid/openrtb/v20.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20) [![Test](https://github.com/prebid/openrtb/actions/workflows/test.yml/badge.svg)](https://github.com/prebid/openrtb/actions/workflows/test.yml)
 
 [OpenRTB](https://iabtechlab.com/standards/openrtb/), [AdCOM](https://iabtechlab.com/standards/openmedia) and [OpenRTB Dynamic Native Ads](https://iabtechlab.com/standards/openrtb-native/) types for [Go programming language](https://golang.org/)
 
@@ -9,24 +9,24 @@
 
 **Requires Go 1.16+**
 
-This library uses [Go modules](https://golang.org/ref/mod) ([tl;dr](https://blog.golang.org/using-go-modules)) and requires Go [1.16](https://golang.org/doc/go1.16)+ to enable the ability to issue release retractions.
+This library uses [Go modules](https://golang.org/ref/mod) ([tl;dr](https://blog.golang.org/using-go-modules)) and requires Go [1.16](https://golang.org/doc/go1.16)+ for the ability to issue release retractions.
 
 # Using
 
 ```bash
-go get -u "github.com/prebid/openrtb/v19/..."
+go get -u "github.com/prebid/openrtb/v20/..."
 ```
 
 ```go
 import (
-	openrtb2 "github.com/prebid/openrtb/v19/openrtb2"
+	openrtb2 "github.com/prebid/openrtb/v20/openrtb2"
 
-	openrtb3 "github.com/prebid/openrtb/v19/openrtb3"
-	adcom1 "github.com/prebid/openrtb/v19/adcom1"
+	openrtb3 "github.com/prebid/openrtb/v20/openrtb3"
+	adcom1 "github.com/prebid/openrtb/v20/adcom1"
 
-	native1 "github.com/prebid/openrtb/v19/native1"
-	nreq "github.com/prebid/openrtb/v19/native1/request"
-	nres "github.com/prebid/openrtb/v19/native1/response"
+	native1 "github.com/prebid/openrtb/v20/native1"
+	nreq "github.com/prebid/openrtb/v20/native1/request"
+	nres "github.com/prebid/openrtb/v20/native1/response"
 )
 ```
 
@@ -51,19 +51,19 @@ The `main` branch always contains latest code, so better use some package manage
 	- all enums, described in section 5, must be typed with section name singularized (e.g., "5.2 Banner Ad Types" -> `type BannerAdType int8`)
 	- all typed enums must have constants for each element, prefixed with type name (e.g., "5.2 Banner Ad Types - XHTML Text Ad (usually mobile)" -> `const BannerAdTypeXHTMLTextAd BannerAdType = 1`)
 	- never use `iota` for enum constants
-	- OpenRTB (2.x) section "5.1 Content Categories" should remain untyped and have no constants
+	- OpenRTB (2.x) "content categories" should remain untyped and have no constants
 
 ## Pointers/omitempty
 Pointer | Omitempty | When to use                                                          | Example
 ------- | --------- | -------------------------------------------------------------------- | ---------------------------------
- no     | no        | _required_ in spec                                                   | `Audio.mimes`
- yes    | yes       | _required_ in spec, but is a part of mutually-exclusive group        | `Imp.{banner,video,audio,native}`
- no     | yes       | zero value (`""`, `0`) is useless / has no meaning                   | `Device.ua`
- yes    | yes       | zero value (`""`, `0`) or value absence (`null`) has special meaning | `Device.{dnt,lmt}`
+ no     | no        | _required_ in spec                                                   | `Audio.MIMEs`
+ yes    | yes       | _required_ in spec, but is a part of mutually-exclusive group        | `Imp.{Banner,Video,Audio,Native}`
+ no     | yes       | zero value (`""`, `0`) has no meaning, is defined in the spec as the default value, or represents time / duration                    | `Device.UA`
+ yes    | yes       | zero value (`""`, `0`) or value absence (`null`) has special meaning | `Device.{DNT,Lmt}`
 
 Using both pointer and `omitempty` is mostly just to save traffic / generate more "canonical" (strict) JSON.
 
-## Documentation ([pkg.go.dev](https://pkg.go.dev/github.com/prebid/openrtb/v19))
+## Documentation ([pkg.go.dev](https://pkg.go.dev/github.com/prebid/openrtb/v20))
 - [Godoc: documenting Go code](http://blog.golang.org/godoc-documenting-go-code)
 - Each entity (type, struct key or constant) should be documented
 - Ideally, copy-paste descriptions as-is, but feel free to omit section numbers, so just `<GoTypeName> defines <copy-pasted description from spec>`
diff --git a/adcom1/README.md b/adcom1/README.md
index 2729b89..9a8c304 100644
--- a/adcom1/README.md
+++ b/adcom1/README.md
@@ -1,3 +1,3 @@
-# adcom1 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/adcom1?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/adcom1)
+# adcom1 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/adcom1?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/adcom1)
 
 [AdCOM](https://iabtechlab.com/standards/openmedia/) [1.0](https://github.com/InteractiveAdvertisingBureau/AdCOM) types for [Go programming language](https://golang.org/)
diff --git a/adcom1/adcom1_test.go b/adcom1/adcom1_test.go
index 0646989..4af567f 100644
--- a/adcom1/adcom1_test.go
+++ b/adcom1/adcom1_test.go
@@ -8,7 +8,7 @@ import (
 	. "github.com/onsi/ginkgo/extensions/table"
 	. "github.com/onsi/gomega"
 
-	. "github.com/prebid/openrtb/v19/adcom1"
+	. "github.com/prebid/openrtb/v20/adcom1"
 )
 
 var _ = DescribeTable(
diff --git a/go.mod b/go.mod
index d61388c..b0d4803 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/prebid/openrtb/v19
+module github.com/prebid/openrtb/v20
 
 go 1.16
 
diff --git a/native1/README.md b/native1/README.md
index c3625c3..bf528a3 100644
--- a/native1/README.md
+++ b/native1/README.md
@@ -1,4 +1,4 @@
-# native1 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/native1)
+# native1 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/native1)
 
 [OpenRTB Dynamic Native Ads API](https://iabtechlab.com/standards/openrtb-native/) [1.2](https://iabtechlab.com/wp-content/uploads/2016/07/OpenRTB-Native-Ads-Specification-Final-1.2.pdf) section "7 Reference Lists/Enumerations" types for [Go programming language](https://golang.org/)
 
diff --git a/native1/request/README.md b/native1/request/README.md
index b02269f..d4eb27a 100644
--- a/native1/request/README.md
+++ b/native1/request/README.md
@@ -1,3 +1,3 @@
-# native1/request [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1/request?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/native1/request)
+# native1/request [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1/request?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/native1/request)
 
 [OpenRTB Dynamic Native Ads API](https://iabtechlab.com/standards/openrtb-native/) [1.2](https://iabtechlab.com/wp-content/uploads/2016/07/OpenRTB-Native-Ads-Specification-Final-1.2.pdf) section "4 Native Ad Request Markup Details" types for [Go programming language](https://golang.org/)
diff --git a/native1/request/data.go b/native1/request/data.go
index 838b081..00f2083 100644
--- a/native1/request/data.go
+++ b/native1/request/data.go
@@ -3,7 +3,7 @@ package request
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 4.6 Data Object
diff --git a/native1/request/event_tracker.go b/native1/request/event_tracker.go
index 9d09c10..1ec98b5 100644
--- a/native1/request/event_tracker.go
+++ b/native1/request/event_tracker.go
@@ -3,7 +3,7 @@ package request
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 4.7 Event Trackers Request Object
diff --git a/native1/request/image.go b/native1/request/image.go
index 0dc64b2..b8d4155 100644
--- a/native1/request/image.go
+++ b/native1/request/image.go
@@ -3,7 +3,7 @@ package request
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 4.4 Image Object
diff --git a/native1/request/request.go b/native1/request/request.go
index c204410..b7d629e 100644
--- a/native1/request/request.go
+++ b/native1/request/request.go
@@ -8,7 +8,7 @@ package request
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 4.1 Native Markup Request Object
diff --git a/native1/request/request_test.go b/native1/request/request_test.go
index f96bf4a..cd4910b 100644
--- a/native1/request/request_test.go
+++ b/native1/request/request_test.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	. "github.com/prebid/openrtb/v19/native1/request"
+	. "github.com/prebid/openrtb/v20/native1/request"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/ginkgo/extensions/table"
diff --git a/native1/request/video.go b/native1/request/video.go
index 27fa839..5934684 100644
--- a/native1/request/video.go
+++ b/native1/request/video.go
@@ -1,7 +1,7 @@
 package request
 
 import (
-	"github.com/prebid/openrtb/v19/openrtb2"
+	"github.com/prebid/openrtb/v20/openrtb2"
 )
 
 // 4.5 Video Object
diff --git a/native1/response/README.md b/native1/response/README.md
index fbe2a4e..676e098 100644
--- a/native1/response/README.md
+++ b/native1/response/README.md
@@ -1,3 +1,3 @@
-# native1/response [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1/response?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/native1/response)
+# native1/response [![GoDoc](https://godoc.org/github.com/prebid/openrtb/native1/response?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/native1/response)
 
 [OpenRTB Dynamic Native Ads API](https://iabtechlab.com/standards/openrtb-native/) [1.2](https://iabtechlab.com/wp-content/uploads/2016/07/OpenRTB-Native-Ads-Specification-Final-1.2.pdf) section "5 Native Ad Response Markup Details" types for [Go programming language](https://golang.org/)
diff --git a/native1/response/data.go b/native1/response/data.go
index 1465287..dd733f4 100644
--- a/native1/response/data.go
+++ b/native1/response/data.go
@@ -3,7 +3,7 @@ package response
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 5.5 Object: Data
diff --git a/native1/response/event_tracker.go b/native1/response/event_tracker.go
index 646d0b5..402e3b9 100644
--- a/native1/response/event_tracker.go
+++ b/native1/response/event_tracker.go
@@ -3,7 +3,7 @@ package response
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 5.8 Event Tracker Response Object
diff --git a/native1/response/image.go b/native1/response/image.go
index 65dc1c7..dd22b46 100644
--- a/native1/response/image.go
+++ b/native1/response/image.go
@@ -3,7 +3,7 @@ package response
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/native1"
+	"github.com/prebid/openrtb/v20/native1"
 )
 
 // 5.4 Object: Image
diff --git a/native1/response/response_test.go b/native1/response/response_test.go
index e77cc3b..34b8eec 100644
--- a/native1/response/response_test.go
+++ b/native1/response/response_test.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	. "github.com/prebid/openrtb/v19/native1/response"
+	. "github.com/prebid/openrtb/v20/native1/response"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/ginkgo/extensions/table"
diff --git a/openrtb2/README.md b/openrtb2/README.md
index 977baf8..8a2d0d9 100644
--- a/openrtb2/README.md
+++ b/openrtb2/README.md
@@ -1,3 +1,3 @@
-# openrtb2 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/openrtb2?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/openrtb2)
+# openrtb2 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/openrtb2?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/openrtb2)
 
 [OpenRTB](https://iabtechlab.com/standards/openrtb/) [2.6](https://iabtechlab.com/wp-content/uploads/2022/04/OpenRTB-2-6_FINAL.pdf) types for [Go programming language](https://golang.org/)
diff --git a/openrtb2/app.go b/openrtb2/app.go
index 5f51f8a..f88ecbc 100644
--- a/openrtb2/app.go
+++ b/openrtb2/app.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // Object: App
@@ -111,7 +111,7 @@ type App struct {
 	//   integer
 	// Description:
 	//   Indicates if the app has a privacy policy, where 0 = no, 1 = yes.
-	PrivacyPolicy int8 `json:"privacypolicy,omitempty"`
+	PrivacyPolicy *int8 `json:"privacypolicy,omitempty"`
 
 	// Attribute:
 	//   paid
@@ -119,7 +119,7 @@ type App struct {
 	//   integer
 	// Description:
 	//   0 = app is free, 1 = the app is a paid version.
-	Paid int8 `json:"paid,omitempty"`
+	Paid *int8 `json:"paid,omitempty"`
 
 	// Attribute:
 	//   publisher
diff --git a/openrtb2/audio.go b/openrtb2/audio.go
index d112223..c1ff9a5 100644
--- a/openrtb2/audio.go
+++ b/openrtb2/audio.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.8 Object: Audio
@@ -170,7 +170,7 @@ type Audio struct {
 	// Type:
 	//   integer
 	// Description:
-	//   Minimum bit rate in Kbps.
+	//   Minimum bit rate in Kbps (kilobits per second).
 	MinBitrate int64 `json:"minbitrate,omitempty"`
 
 	// Attribute:
@@ -178,7 +178,7 @@ type Audio struct {
 	// Type:
 	//   integer
 	// Description:
-	//   Maximum bit rate in Kbps.
+	//   Maximum bit rate in Kbps (kilobits per second).
 	MaxBitrate int64 `json:"maxbitrate,omitempty"`
 
 	// Attribute:
@@ -245,7 +245,7 @@ type Audio struct {
 	// Description:
 	//   Indicates if the ad is stitched with audio content or delivered
 	//   independently, where 0 = no, 1 = yes.
-	Stitched int8 `json:"stitched,omitempty"`
+	Stitched *int8 `json:"stitched,omitempty"`
 
 	// Attribute:
 	//   nvol
diff --git a/openrtb2/banner.go b/openrtb2/banner.go
index ca87693..d3a5254 100644
--- a/openrtb2/banner.go
+++ b/openrtb2/banner.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.6 Object: Banner
@@ -170,7 +170,7 @@ type Banner struct {
 	//   (Section 3.2.7) in an array of companion ads. Indicates the
 	//   companion banner rendering mode relative to the associated
 	//   video, where 0 = concurrent, 1 = end-card.
-	VCm int8 `json:"vcm,omitempty"`
+	Vcm *int8 `json:"vcm,omitempty"`
 
 	// Attribute:
 	//   ext
diff --git a/openrtb2/bid.go b/openrtb2/bid.go
index 7a55e68..150211e 100644
--- a/openrtb2/bid.go
+++ b/openrtb2/bid.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 4.3.3 Object: Bid
diff --git a/openrtb2/bid_request.go b/openrtb2/bid_request.go
index 6ba36b5..28c9988 100644
--- a/openrtb2/bid_request.go
+++ b/openrtb2/bid_request.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.1 Object: BidRequest
diff --git a/openrtb2/bid_request_test.go b/openrtb2/bid_request_test.go
index 437749b..76470a6 100644
--- a/openrtb2/bid_request_test.go
+++ b/openrtb2/bid_request_test.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	. "github.com/prebid/openrtb/v19/openrtb2"
+	. "github.com/prebid/openrtb/v20/openrtb2"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/ginkgo/extensions/table"
diff --git a/openrtb2/bid_response.go b/openrtb2/bid_response.go
index 451a575..77f7edf 100644
--- a/openrtb2/bid_response.go
+++ b/openrtb2/bid_response.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/openrtb3"
+	"github.com/prebid/openrtb/v20/openrtb3"
 )
 
 // 4.3.1 Object: BidResponse
diff --git a/openrtb2/bid_response_test.go b/openrtb2/bid_response_test.go
index f1b9d02..8959fb9 100644
--- a/openrtb2/bid_response_test.go
+++ b/openrtb2/bid_response_test.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	. "github.com/prebid/openrtb/v19/openrtb2"
+	. "github.com/prebid/openrtb/v20/openrtb2"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/ginkgo/extensions/table"
diff --git a/openrtb2/content.go b/openrtb2/content.go
index 0c60b29..4034125 100644
--- a/openrtb2/content.go
+++ b/openrtb2/content.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.16 Object: Content
@@ -205,7 +205,7 @@ type Content struct {
 	//   integer
 	// Description:
 	//   0 = not live, 1 = content is live (e.g., stream, live blog).
-	LiveStream int8 `json:"livestream,omitempty"`
+	LiveStream *int8 `json:"livestream,omitempty"`
 
 	// Attribute:
 	//   sourcerelationship
@@ -213,7 +213,7 @@ type Content struct {
 	//   integer
 	// Description:
 	//   0 = indirect, 1 = direct.
-	SourceRelationship int8 `json:"sourcerelationship,omitempty"`
+	SourceRelationship *int8 `json:"sourcerelationship,omitempty"`
 
 	// Attribute:
 	//   len
@@ -248,7 +248,7 @@ type Content struct {
 	// Description:
 	//   Indicator of whether or not the content is embeddable (e.g.,
 	//   an embeddable video player), where 0 = no, 1 = yes.
-	Embeddable int8 `json:"embeddable,omitempty"`
+	Embeddable *int8 `json:"embeddable,omitempty"`
 
 	// Attribute:
 	//   data
diff --git a/openrtb2/device.go b/openrtb2/device.go
index 4645aed..90e84fa 100644
--- a/openrtb2/device.go
+++ b/openrtb2/device.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.18 Object: Device
@@ -186,7 +186,7 @@ type Device struct {
 	//   integer
 	// Description:
 	//   Support for JavaScript, where 0 = no, 1 = yes.
-	JS int8 `json:"js,omitempty"`
+	JS *int8 `json:"js,omitempty"`
 
 	// Attribute:
 	//   geofetch
@@ -195,7 +195,7 @@ type Device struct {
 	// Description:
 	//   Indicates if the geolocation API will be available to JavaScript
 	//   code running in the banner, where 0 = no, 1 = yes.
-	GeoFetch int8 `json:"geofetch,omitempty"`
+	GeoFetch *int8 `json:"geofetch,omitempty"`
 
 	// Attribute:
 	//   flashver
diff --git a/openrtb2/dooh.go b/openrtb2/dooh.go
index c37b096..69111ce 100644
--- a/openrtb2/dooh.go
+++ b/openrtb2/dooh.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // Object: DOOH
diff --git a/openrtb2/geo.go b/openrtb2/geo.go
index 184d3bb..1788717 100644
--- a/openrtb2/geo.go
+++ b/openrtb2/geo.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.19 Object: Geo
@@ -23,7 +23,7 @@ type Geo struct {
 	//   float
 	// Description:
 	//   Latitude from -90.0 to +90.0, where negative is south.
-	Lat float64 `json:"lat,omitempty"`
+	Lat *float64 `json:"lat,omitempty"`
 
 	// Attribute:
 	//   lon
@@ -31,7 +31,7 @@ type Geo struct {
 	//   float
 	// Description:
 	//   Longitude from -180.0 to +180.0, where negative is west.
-	Lon float64 `json:"lon,omitempty"`
+	Lon *float64 `json:"lon,omitempty"`
 
 	// Attribute:
 	//   type
diff --git a/openrtb2/imp.go b/openrtb2/imp.go
index 77030cb..1b1ec1f 100644
--- a/openrtb2/imp.go
+++ b/openrtb2/imp.go
@@ -142,7 +142,7 @@ type Imp struct {
 	//   creative in an app, where 0 = embedded, 1 = native. Note that
 	//   the Safari View Controller in iOS 9.x devices is considered a
 	//   native browser for purposes of this attribute.
-	ClickBrowser int8 `json:"clickbrowser,omitempty"`
+	ClickBrowser *int8 `json:"clickbrowser,omitempty"`
 
 	// Attribute:
 	//   secure
diff --git a/openrtb2/metric.go b/openrtb2/metric.go
index 444fcbd..c1ca151 100644
--- a/openrtb2/metric.go
+++ b/openrtb2/metric.go
@@ -22,7 +22,7 @@ type Metric struct {
 	//   value
 	// Type:
 	//   float; required
-	// Dscription:
+	// Description:
 	//   Number representing the value of the metric. Probabilities
 	//   must be in the range 0.0 – 1.0.
 	Value float64 `json:"value,omitempty"`
diff --git a/openrtb2/native.go b/openrtb2/native.go
index fa10369..ef40064 100644
--- a/openrtb2/native.go
+++ b/openrtb2/native.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.9 Object: Native
diff --git a/openrtb2/producer.go b/openrtb2/producer.go
index b9157cf..70f9009 100644
--- a/openrtb2/producer.go
+++ b/openrtb2/producer.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.17 Object: Producer
diff --git a/openrtb2/publisher.go b/openrtb2/publisher.go
index 8976568..10c626a 100644
--- a/openrtb2/publisher.go
+++ b/openrtb2/publisher.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.15 Object: Publisher
diff --git a/openrtb2/qty.go b/openrtb2/qty.go
index 3eb8e35..a9d23bd 100644
--- a/openrtb2/qty.go
+++ b/openrtb2/qty.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // Object: Qty
diff --git a/openrtb2/refresh.go b/openrtb2/refresh.go
index 077354c..dae1349 100644
--- a/openrtb2/refresh.go
+++ b/openrtb2/refresh.go
@@ -19,7 +19,7 @@ type Refresh struct {
 	//   integer; recommended
 	// Description:
 	//   The number of times this ad slot had been refreshed since last page load.
-	Count int `json:"count,omitempty"`
+	Count *int `json:"count,omitempty"`
 
 	// Attribute:
 	//   ext
diff --git a/openrtb2/refsettings.go b/openrtb2/refsettings.go
index 8cb9af4..45b0007 100644
--- a/openrtb2/refsettings.go
+++ b/openrtb2/refsettings.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // Object: RefSettings
diff --git a/openrtb2/site.go b/openrtb2/site.go
index 2eb1154..876bddb 100644
--- a/openrtb2/site.go
+++ b/openrtb2/site.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // Object: Site
@@ -107,7 +107,7 @@ type Site struct {
 	// Description:
 	//   Indicates if the site has been programmed to optimize layout
 	//   when viewed on mobile devices, where 0 = no, 1 = yes.
-	Mobile int8 `json:"mobile,omitempty"`
+	Mobile *int8 `json:"mobile,omitempty"`
 
 	// Attribute:
 	//   privacypolicy
@@ -115,7 +115,7 @@ type Site struct {
 	//   integer
 	// Description:
 	//   Indicates if the site has a privacy policy, where 0 = no, 1 = yes.
-	PrivacyPolicy int8 `json:"privacypolicy,omitempty"`
+	PrivacyPolicy *int8 `json:"privacypolicy,omitempty"`
 
 	// Attribute:
 	//   publisher
diff --git a/openrtb2/source.go b/openrtb2/source.go
index 9df3e6d..6867061 100644
--- a/openrtb2/source.go
+++ b/openrtb2/source.go
@@ -16,7 +16,7 @@ type Source struct {
 	// Description:
 	//   Entity responsible for the final impression sale decision, where
 	//   0 = exchange, 1 = upstream source.
-	FD int8 `json:"fd,omitempty"`
+	FD *int8 `json:"fd,omitempty"`
 
 	// Attribute:
 	//   tid
diff --git a/openrtb2/uid.go b/openrtb2/uid.go
index 02089c5..18edf70 100644
--- a/openrtb2/uid.go
+++ b/openrtb2/uid.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.28 Object: UID
diff --git a/openrtb2/user_agent.go b/openrtb2/user_agent.go
index 6fb42df..db21775 100644
--- a/openrtb2/user_agent.go
+++ b/openrtb2/user_agent.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.29 Object: UserAgent
diff --git a/openrtb2/video.go b/openrtb2/video.go
index 7336400..21bb5df 100644
--- a/openrtb2/video.go
+++ b/openrtb2/video.go
@@ -3,7 +3,7 @@ package openrtb2
 import (
 	"encoding/json"
 
-	"github.com/prebid/openrtb/v19/adcom1"
+	"github.com/prebid/openrtb/v20/adcom1"
 )
 
 // 3.2.7 Object: Video
@@ -112,7 +112,7 @@ type Video struct {
 	//   integer; recommended
 	// Description:
 	//   Width of the video player in device independent pixels (DIPS).
-	W int64 `json:"w,omitempty"`
+	W *int64 `json:"w,omitempty"`
 
 	// Attribute:
 	//   h
@@ -120,7 +120,7 @@ type Video struct {
 	//   integer; recommended
 	// Description:
 	//   Height of the video player in device independent pixels (DIPS).
-	H int64 `json:"h,omitempty"`
+	H *int64 `json:"h,omitempty"`
 
 	// Attribute:
 	//   podid
@@ -276,7 +276,7 @@ type Video struct {
 	// Type:
 	//   integer
 	// Description:
-	//   Minimum bit rate in Kbps.
+	//   Minimum bit rate in Kbps (kilobits per second).
 	MinBitRate int64 `json:"minbitrate,omitempty"`
 
 	// Attribute:
@@ -284,7 +284,7 @@ type Video struct {
 	// Type:
 	//   integer
 	// Description:
-	//   Maximum bit rate in Kbps.
+	//   Maximum bit rate in Kbps (kilobits per second).
 	MaxBitRate int64 `json:"maxbitrate,omitempty"`
 
 	// Attribute:
@@ -294,7 +294,7 @@ type Video struct {
 	// Description:
 	//   Indicates if letter-boxing of 4:3 content into a 16:9 window is
 	//   allowed, where 0 = no, 1 = yes.
-	BoxingAllowed int8 `json:"boxingallowed,omitempty"`
+	BoxingAllowed *int8 `json:"boxingallowed,omitempty"`
 
 	// Attribute:
 	//   playbackmethod
diff --git a/openrtb3/README.md b/openrtb3/README.md
index 103692f..e8fa7da 100644
--- a/openrtb3/README.md
+++ b/openrtb3/README.md
@@ -1,3 +1,3 @@
-# openrtb3 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/openrtb3?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v19/openrtb3)
+# openrtb3 [![GoDoc](https://godoc.org/github.com/prebid/openrtb/openrtb3?status.svg)](https://pkg.go.dev/github.com/prebid/openrtb/v20/openrtb3)
 
 [OpenRTB](https://iabtechlab.com/standards/openrtb/) [3.0](https://github.com/InteractiveAdvertisingBureau/openrtb) types for [Go programming language](https://golang.org/)
diff --git a/openrtb3/openrtb3_test.go b/openrtb3/openrtb3_test.go
index 20dd9e3..cf68800 100644
--- a/openrtb3/openrtb3_test.go
+++ b/openrtb3/openrtb3_test.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"path/filepath"
 
-	. "github.com/prebid/openrtb/v19/openrtb3"
+	. "github.com/prebid/openrtb/v20/openrtb3"
 
 	. "github.com/onsi/ginkgo/extensions/table"
 	. "github.com/onsi/gomega"