diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7982793..9ca9460 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,11 +13,11 @@ jobs:
     strategy:
       matrix:
         operating-system: ['ubuntu-latest']
-        php-versions: ['8.1']
+        php-versions: ['8.1', '8.2', '8.3', '8.4']
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -28,7 +28,7 @@ jobs:
           coverage: none
 
       - name: Install Composer dependencies
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
 
       - name: PHPUnit tests
         run: vendor/bin/phpunit
\ No newline at end of file
diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index 8106841..f5bd5c5 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -13,10 +13,10 @@ jobs:
     strategy:
       matrix:
         operating-system: ['ubuntu-latest']
-        php-versions: ['8.1']
+        php-versions: ['8.3']
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -26,7 +26,7 @@ jobs:
           coverage: none
 
       - name: Install Composer dependencies
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
         with:
           composer-options: --no-dev
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index acd5aa8..b4a7cc4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 # Changelog
 
-## Version 5.1.0 (2202-05-23)
+## Version 5.1.1 (2024-04-19)
+
+* Support both sodium_compat v1 and v2. 
+  [Learn more here](https://paragonie.com/blog/2024/04/release-sodium-compat-v2-and-future-our-polyfill-libraries).
+
+## Version 5.1.0 (2022-05-23)
 
 * Dropped PHP 8.0 support, increased minimum PHP version to 8.1.
   * This is due to the significant performance difference between ext/sodium
diff --git a/composer.json b/composer.json
index c32fea2..e9937d5 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
         "ext-json": "*",
         "paragonie/constant_time_encoding": "^2",
         "paragonie/hidden-string": "^1|^2",
-        "paragonie/sodium_compat": "^1.17"
+        "paragonie/sodium_compat": "^1|^2"
     },
     "autoload": {
         "psr-4": {