diff --git a/.changeset/warm-geese-dance.md b/.changeset/warm-geese-dance.md
deleted file mode 100644
index 5deb7a3e6eb..00000000000
--- a/.changeset/warm-geese-dance.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'openzeppelin-solidity': patch
----
-
-`Base64`: Fix issue where dirty memory located just after the input buffer is affecting the result.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03a3a3bc617..ad34ae603b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 
 
+## 4.9.6 (2024-02-29)
+
+- `Base64`: Fix issue where dirty memory located just after the input buffer is affecting the result. ([#4929](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4929))
+
 ## 4.9.5 (2023-12-08)
 
 - `Multicall`: Patch duplicated `Address.functionDelegateCall`.
diff --git a/contracts/package.json b/contracts/package.json
index 1a7e91626e1..bd0c54fff7a 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@openzeppelin/contracts",
   "description": "Secure Smart Contract library for Solidity",
-  "version": "4.9.5",
+  "version": "4.9.6",
   "files": [
     "**/*.sol",
     "/build/contracts/*.json",
diff --git a/contracts/utils/Base64.sol b/contracts/utils/Base64.sol
index fc9064b8e06..bc606a2a66c 100644
--- a/contracts/utils/Base64.sol
+++ b/contracts/utils/Base64.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)
+// OpenZeppelin Contracts (last updated v4.9.6) (utils/Base64.sol)
 
 pragma solidity ^0.8.0;
 
diff --git a/package.json b/package.json
index e5e43fcbe89..5f51741906a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "openzeppelin-solidity",
   "description": "Secure Smart Contract library for Solidity",
-  "version": "4.9.5",
+  "version": "4.9.6",
   "files": [
     "/contracts/**/*.sol",
     "/build/contracts/*.json",