diff --git a/CHANGELOG.md b/CHANGELOG.md
index 957cdb5e..88a7ef77 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,21 @@
+0.31.0
+---
+* **all**
+    * update to OpenCV 4.6.0
+* **build**
+    * Switch to Github Actions for Linux CI build
+    * Use go -tags static when verifying static build
+* **core**
+    * Add Mat.ElemSize (#964)
+    * avoid index out of range panic in NewPointsVectorFromPoints
+* **video**
+    * add findTransformECC function
+* **contrib/ximgproc**
+    * add PeiLinNormalization() function
+    * add anisotropicDiffusion() function
+    * implement edgePreservingFilter()
+    * implement niBlackThreshold and thinning filters
+
 0.30.0
 ---
 * **all**
diff --git a/Makefile b/Makefile
index 052deac0..2efb37bf 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 .PHONY: test deps download build clean astyle cmds docker
 
 # GoCV version to use.
-GOCV_VERSION?="v0.30.0"
+GOCV_VERSION?="v0.31.0"
 
 # OpenCV version to use.
 OPENCV_VERSION?=4.6.0
diff --git a/README.md b/README.md
index 17d0cbce..5aa4a0e8 100644
--- a/README.md
+++ b/README.md
@@ -152,7 +152,7 @@ If you need static opencv libraries
 
 If it works correctly, at the end of the entire process, the following message should be displayed:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0
 
 That's it, now you are ready to use GoCV.
@@ -178,7 +178,7 @@ If you need static opencv libraries
 
 If it works correctly, at the end of the entire process, the following message should be displayed:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0-openvino
     cuda information:
       Device 0:  "GeForce MX150"  2003Mb, sm_61, Driver/Runtime ver.10.0/10.0
@@ -240,7 +240,7 @@ Now you should be able to build or run any of the examples:
 
 The version program should output the following:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0
 
 #### Cleanup extra files
@@ -338,7 +338,7 @@ The following make command should do everything to download and install OpenCV 4
 
 If it works correctly, at the end of the entire process, the following message should be displayed:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0
 
 That's it, now you are ready to use GoCV.
@@ -377,7 +377,7 @@ Now you should be able to build or run any of the examples:
 
 The version program should output the following:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0
 
 ### Custom Environment
@@ -439,7 +439,7 @@ Now you should be able to build or run any of the command examples:
 
 The version program should output the following:
 
-	gocv version: 0.30.0
+	gocv version: 0.31.0
 	opencv lib version: 4.6.0
 
 That's it, now you are ready to use GoCV.
diff --git a/openvino/README.md b/openvino/README.md
index 572aa38c..c5338570 100644
--- a/openvino/README.md
+++ b/openvino/README.md
@@ -1,6 +1,6 @@
 # Using the Intel® Distribution of OpenVINO™ toolkit
 
-The [Intel® Distribution of OpenVINO™ toolkit](https://software.intel.com/en-us/openvino-toolkit) is a set of tools and libraries for computer vision applications, that uses computer vision and imaging algorithms developed at Intel. It also includes a complete build of OpenCV 4.5.3.
+The [Intel® Distribution of OpenVINO™ toolkit](https://software.intel.com/en-us/openvino-toolkit) is a set of tools and libraries for computer vision applications, that uses computer vision and imaging algorithms developed at Intel. It also includes a complete build of OpenCV 4.6.0.
 
 GoCV supports using the Intel GPU or Intel OpenVINO Inference Engine as a backend for the OpenCV deep neural network (DNN) module. For details, please see:
 https://github.com/hybridgroup/gocv/blob/release/openvino/ie/README.md
@@ -33,7 +33,7 @@ Now you can run the version command example to make sure you are compiling/linki
 
 ```
 $ go run -tags customenv ./cmd/version/main.go 
-gocv version: 0.30.0
+gocv version: 0.31.0
 opencv lib version: 4.6.0-openvino
 ```