diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24ec2e4..b670fb4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,15 @@
+## [2.3.0](https://github.com/andersondanilo/jsonapi-fractal/compare/v2.2.0...v2.3.0) (2023-01-14)
+
+
+### Features
+
+* custom relationship types ([#20](https://github.com/andersondanilo/jsonapi-fractal/issues/20)) ([70653e7](https://github.com/andersondanilo/jsonapi-fractal/commit/70653e7e618ef18b048ff7616d54ca2ddacfb76d))
+
+
+### Bug Fixes
+
+* changeCase for relation names ([#21](https://github.com/andersondanilo/jsonapi-fractal/issues/21)) ([d8ca17f](https://github.com/andersondanilo/jsonapi-fractal/commit/d8ca17f6ea3e04979131ad70e55c9bdd02f4fc88))
+
 ## [2.2.0](https://github.com/andersondanilo/jsonapi-fractal/compare/v2.1.0...v2.2.0) (2022-09-23)
 
 
diff --git a/docs/README.md b/docs/README.md
index 59f637f..618661b 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -70,7 +70,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:17](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L17)
+[src/types.ts:17](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L17)
 
 ___
 
@@ -96,7 +96,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:5](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L5)
+[src/context.ts:5](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L5)
 
 ___
 
@@ -106,7 +106,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:15](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L15)
+[src/types.ts:15](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L15)
 
 ___
 
@@ -116,7 +116,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:11](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L11)
+[src/types.ts:11](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L11)
 
 ___
 
@@ -126,7 +126,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:28](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L28)
+[src/types.ts:28](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L28)
 
 ___
 
@@ -136,7 +136,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:21](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L21)
+[src/types.ts:21](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L21)
 
 ___
 
@@ -146,7 +146,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:19](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L19)
+[src/types.ts:19](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L19)
 
 ___
 
@@ -156,7 +156,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:13](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L13)
+[src/types.ts:13](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L13)
 
 ___
 
@@ -166,7 +166,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:35](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L35)
+[src/types.ts:35](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L35)
 
 ___
 
@@ -192,7 +192,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:50](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L50)
+[src/types.ts:50](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L50)
 
 ___
 
@@ -209,7 +209,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:39](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L39)
+[src/types.ts:39](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L39)
 
 ___
 
@@ -234,7 +234,7 @@ ___
 
 #### Defined in
 
-[src/transformer.ts:24](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L24)
+[src/transformer.ts:24](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L24)
 
 ___
 
@@ -266,7 +266,7 @@ ___
 
 #### Defined in
 
-[src/transformer.ts:19](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L19)
+[src/transformer.ts:19](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L19)
 
 ___
 
@@ -283,7 +283,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:23](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L23)
+[src/types.ts:23](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L23)
 
 ___
 
@@ -293,13 +293,13 @@ ___
 
 #### Defined in
 
-[src/types.ts:37](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L37)
+[src/types.ts:37](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L37)
 
 ___
 
 ### SerializeOptions
 
-Ƭ **SerializeOptions**<`TExtraOptions`\>: [`Options`](README.md#options)<`TExtraOptions`\> & { `relationships?`: `string`[]  }
+Ƭ **SerializeOptions**<`TExtraOptions`\>: [`Options`](README.md#options)<`TExtraOptions`\> & { `relationships?`: `string`[] \| `Record`<`string`, `string`\>  }
 
 #### Type parameters
 
@@ -309,7 +309,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:63](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L63)
+[src/types.ts:63](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L63)
 
 ___
 
@@ -326,7 +326,7 @@ ___
 
 #### Defined in
 
-[src/transformer.ts:14](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L14)
+[src/transformer.ts:14](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L14)
 
 ## Functions
 
@@ -356,7 +356,7 @@ Deserialize a JSON:API response
 
 #### Defined in
 
-[src/deserializer.ts:12](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/deserializer.ts#L12)
+[src/deserializer.ts:12](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/deserializer.ts#L12)
 
 ___
 
@@ -387,7 +387,7 @@ Serialize the entity
 
 #### Defined in
 
-[src/serializer.ts:32](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/serializer.ts#L32)
+[src/serializer.ts:32](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/serializer.ts#L32)
 
 ___
 
@@ -410,7 +410,7 @@ Create a ContextBuilder, used to configure the transformation
 
 #### Defined in
 
-[src/serializer.ts:21](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/serializer.ts#L21)
+[src/serializer.ts:21](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/serializer.ts#L21)
 
 ___
 
@@ -433,4 +433,4 @@ Keep only a set of fields on a given object
 
 #### Defined in
 
-[src/utils.ts:55](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/utils.ts#L55)
+[src/utils.ts:54](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/utils.ts#L54)
diff --git a/docs/classes/ContextBuilder.md b/docs/classes/ContextBuilder.md
index 9faa4ce..2aa14a3 100644
--- a/docs/classes/ContextBuilder.md
+++ b/docs/classes/ContextBuilder.md
@@ -53,7 +53,7 @@
 
 #### Defined in
 
-[src/context.ts:18](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L18)
+[src/context.ts:18](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L18)
 
 ## Properties
 
@@ -63,7 +63,7 @@
 
 #### Defined in
 
-[src/context.ts:15](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L15)
+[src/context.ts:15](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L15)
 
 ___
 
@@ -73,7 +73,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:13](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L13)
+[src/context.ts:13](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L13)
 
 ___
 
@@ -83,7 +83,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:16](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L16)
+[src/context.ts:16](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L16)
 
 ___
 
@@ -107,7 +107,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:18](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L18)
+[src/context.ts:18](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L18)
 
 ___
 
@@ -117,7 +117,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:14](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L14)
+[src/context.ts:14](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L14)
 
 ## Methods
 
@@ -131,7 +131,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:60](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L60)
+[src/context.ts:60](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L60)
 
 ___
 
@@ -145,7 +145,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:43](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L43)
+[src/context.ts:43](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L43)
 
 ___
 
@@ -165,7 +165,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:31](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L31)
+[src/context.ts:31](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L31)
 
 ___
 
@@ -185,7 +185,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:20](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L20)
+[src/context.ts:20](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L20)
 
 ___
 
@@ -205,7 +205,7 @@ ___
 
 #### Defined in
 
-[src/context.ts:37](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L37)
+[src/context.ts:37](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L37)
 
 ___
 
@@ -225,4 +225,4 @@ ___
 
 #### Defined in
 
-[src/context.ts:25](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/context.ts#L25)
+[src/context.ts:25](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/context.ts#L25)
diff --git a/docs/classes/DefaultTransformer.md b/docs/classes/DefaultTransformer.md
index 44d5864..43c53ad 100644
--- a/docs/classes/DefaultTransformer.md
+++ b/docs/classes/DefaultTransformer.md
@@ -34,7 +34,7 @@
 
 ### constructor
 
-• **new DefaultTransformer**<`TEntity`, `TExtraOptions`\>(`type`, `relationshipNames?`)
+• **new DefaultTransformer**<`TEntity`, `TExtraOptions`\>(`type`, `relationships?`)
 
 #### Type parameters
 
@@ -48,7 +48,7 @@
 | Name | Type | Default value |
 | :------ | :------ | :------ |
 | `type` | `string` | `undefined` |
-| `relationshipNames` | `string`[] | `[]` |
+| `relationships` | `string`[] \| `Record`<`string`, `string`\> | `[]` |
 
 #### Overrides
 
@@ -56,7 +56,7 @@
 
 #### Defined in
 
-[src/default-transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/default-transformer.ts#L8)
+[src/default-transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/default-transformer.ts#L8)
 
 ## Properties
 
@@ -70,7 +70,7 @@
 
 #### Defined in
 
-[src/default-transformer.ts:6](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/default-transformer.ts#L6)
+[src/default-transformer.ts:6](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/default-transformer.ts#L6)
 
 ___
 
@@ -84,7 +84,7 @@ ___
 
 #### Defined in
 
-[src/default-transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/default-transformer.ts#L8)
+[src/default-transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/default-transformer.ts#L8)
 
 ## Methods
 
@@ -108,4 +108,4 @@ ___
 
 #### Defined in
 
-[src/default-transformer.ts:23](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/default-transformer.ts#L23)
+[src/default-transformer.ts:28](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/default-transformer.ts#L28)
diff --git a/docs/classes/JsonApiFractalError.md b/docs/classes/JsonApiFractalError.md
index 0d8983c..6ee4c67 100644
--- a/docs/classes/JsonApiFractalError.md
+++ b/docs/classes/JsonApiFractalError.md
@@ -44,7 +44,7 @@ Error.constructor
 
 #### Defined in
 
-[src/errors.ts:2](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/errors.ts#L2)
+[src/errors.ts:2](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/errors.ts#L2)
 
 ## Properties
 
@@ -58,7 +58,7 @@ Error.message
 
 #### Defined in
 
-node_modules/typescript/lib/lib.es5.d.ts:1041
+node_modules/typescript/lib/lib.es5.d.ts:1054
 
 ___
 
@@ -72,7 +72,7 @@ Error.name
 
 #### Defined in
 
-node_modules/typescript/lib/lib.es5.d.ts:1040
+node_modules/typescript/lib/lib.es5.d.ts:1053
 
 ___
 
@@ -86,7 +86,7 @@ Error.stack
 
 #### Defined in
 
-node_modules/typescript/lib/lib.es5.d.ts:1042
+node_modules/typescript/lib/lib.es5.d.ts:1055
 
 ___
 
diff --git a/docs/classes/Transformer.md b/docs/classes/Transformer.md
index 7816f9f..5fce822 100644
--- a/docs/classes/Transformer.md
+++ b/docs/classes/Transformer.md
@@ -45,7 +45,7 @@
 
 #### Defined in
 
-[src/transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L8)
+[src/transformer.ts:8](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L8)
 
 ## Properties
 
@@ -55,7 +55,7 @@
 
 #### Defined in
 
-[src/transformer.ts:5](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L5)
+[src/transformer.ts:5](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L5)
 
 ___
 
@@ -65,7 +65,7 @@ ___
 
 #### Defined in
 
-[src/transformer.ts:4](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L4)
+[src/transformer.ts:4](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L4)
 
 ## Methods
 
@@ -86,4 +86,4 @@ ___
 
 #### Defined in
 
-[src/transformer.ts:6](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/transformer.ts#L6)
+[src/transformer.ts:6](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/transformer.ts#L6)
diff --git a/docs/enums/CaseType.md b/docs/enums/CaseType.md
index 890e884..9a12224 100644
--- a/docs/enums/CaseType.md
+++ b/docs/enums/CaseType.md
@@ -18,7 +18,7 @@
 
 #### Defined in
 
-[src/types.ts:45](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L45)
+[src/types.ts:45](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L45)
 
 ___
 
@@ -28,7 +28,7 @@ ___
 
 #### Defined in
 
-[src/types.ts:47](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L47)
+[src/types.ts:47](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L47)
 
 ___
 
@@ -38,4 +38,4 @@ ___
 
 #### Defined in
 
-[src/types.ts:46](https://github.com/andersondanilo/jsonapi-fractal/blob/fc0b05d/src/types.ts#L46)
+[src/types.ts:46](https://github.com/andersondanilo/jsonapi-fractal/blob/d8ca17f/src/types.ts#L46)
diff --git a/package.json b/package.json
index b761fae..97f4d60 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jsonapi-fractal",
-  "version": "2.2.0",
+  "version": "2.3.0",
   "description": "JSON:API Serializer inspired by Fractal (PHP)",
   "license": "MIT",
   "main": "dist/index",