diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 7348966..be622c6 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -28,14 +28,17 @@ jobs:
       matrix:
         php:
           -
-            version: 7.4
-            xdebug: 3.1.5
+            version: '7.4'
+            xdebug: '3.1.5'
           -
-            version: 8.0
-            xdebug: 3.1.5
+            version: '8.0'
+            xdebug: '3.1.5'
           -
-            version: 8.1
-            xdebug: 3.1.5
+            version: '8.1'
+            xdebug: '3.1.5'
+          -
+            version: '8.2'
+            xdebug: '3.2.1'
     runs-on: ubuntu-20.04
     steps:
       -
@@ -79,22 +82,28 @@ jobs:
       matrix:
         php:
           -
-            version: 7.4
+            version: '7.4'
+            composer: --prefer-lowest
+          -
+            version: '8.0'
             composer: --prefer-lowest
           -
-            version: 8.0
+            version: '8.1'
             composer: --prefer-lowest
           -
-            version: 8.1
+            version: '8.2'
             composer: --prefer-lowest
           -
-            version: 7.4
+            version: '7.4'
+            composer: --prefer-stable
+          -
+            version: '8.0'
             composer: --prefer-stable
           -
-            version: 8.0
+            version: '8.1'
             composer: --prefer-stable
           -
-            version: 8.1
+            version: '8.2'
             composer: --prefer-stable
     steps:
       -
diff --git a/Dockerfile b/Dockerfile
index 664ce29..dfa0a36 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ RUN apk add --no-cache --virtual .build-deps $PHPIZE_DEPS \
     && docker-php-source extract \
     && docker-php-ext-configure zip \
     && docker-php-ext-install zip \
+    && apk add --update linux-headers \
     && mkdir -p /usr/src/php/ext/xdebug \
     && curl -fsSL https://github.com/xdebug/xdebug/archive/$XDEBUG_VERSION.tar.gz | tar xvz -C /usr/src/php/ext/xdebug --strip 1 \
     && docker-php-ext-install xdebug \
diff --git a/composer.json b/composer.json
index 3e39cef..f7ede28 100644
--- a/composer.json
+++ b/composer.json
@@ -23,11 +23,11 @@
     }
   ],
   "require": {
-    "php": "^7.3|^8.0|^8.1",
+    "php": "^7.3|^8.0",
     "beberlei/assert": "^2.9.9|~3.0",
-    "flix-tech/confluent-schema-registry-api": "^7.6.0",
+    "flix-tech/confluent-schema-registry-api": "^8.0",
     "guzzlehttp/promises": "^1.4.0",
-    "flix-tech/avro-php": "^4.3.0",
+    "flix-tech/avro-php": "^5.0",
     "widmogrod/php-functional": "^6.0"
   },
   "require-dev": {