diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index bd7f06c..3447649 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -1,25 +1,25 @@
 name: 'Package'
 
 on:
-    pull_request:
+  pull_request:
 
 jobs:
-    package:
-        name: 'Package'
-        runs-on: 'ubuntu-20.04'
-        steps:
-            - name: 'Check out repository'
-              uses: 'actions/checkout@v2'
-              with:
-                  path: 'ext'
+  package:
+    name: 'Package'
+    runs-on: 'ubuntu-22.04'
+    steps:
+      - name: 'Check out repository'
+        uses: 'actions/checkout@v4'
+        with:
+          path: 'ext'
 
-            - name: 'Install dependencies'
-              run: 'sudo apt-get -y install php7.4-dev libjudy-dev'
+      - name: 'Install dependencies'
+        run: 'sudo apt-get -y install php8.1-dev libjudy-dev'
 
-            - name: 'Package and verify package'
-              run: './ext/.github/workflows/package/package.sh'
+      - name: 'Package and verify package'
+        run: './ext/.github/workflows/package/package.sh'
 
-            - name: 'Archive package'
-              uses: 'actions/upload-artifact@v2'
-              with:
-                  path: 'ext/memprof.tgz'
+      - name: 'Archive package'
+        uses: 'actions/upload-artifact@v3'
+        with:
+          path: 'ext/memprof.tgz'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 05a78c7..3757566 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,66 +1,72 @@
 name: 'Tests'
 
 on:
-    push:
-        branches:
-            - v3
-    pull_request:
-    schedule:
-        - cron: '30 8 * * 1'
+  push:
+    branches:
+      - v3
+  pull_request:
+  schedule:
+    - cron: '30 8 * * 1'
 
 jobs:
-    tests:
-        name: 'Tests'
-        strategy:
-          matrix:
-            include:
-              - php: '8.1.0'
-                os: 'ubuntu-20.04'
-                expect_native: 1
-                werror: 1
+  tests:
+    name: 'Tests'
+    strategy:
+      matrix:
+        include:
+          - php: '8.1.0'
+            os: 'ubuntu-20.04'
+            expect_native: 1
+            werror: 1
+            xdebug: '3.1.2'
 
-              - php: '8.0.0'
-                os: 'ubuntu-20.04'
-                expect_native: 1
+          - php: '8.1.0'
+            os: 'macos-13'
+            xdebug: '3.1.2'
 
-              - php: '8.1.0'
-                os: 'macos-10.15'
+          - php: '8.0.0'
+            os: 'ubuntu-20.04'
+            expect_native: 1
+            xdebug: '3.1.2'
 
-              - php: '7.4.0'
-                os: 'ubuntu-20.04'
-                expect_native: 1
+          - php: '7.4.0'
+            os: 'ubuntu-20.04'
+            expect_native: 1
+            xdebug: '3.1.2'
 
-              - php: '7.3.0'
-                os: 'ubuntu-20.04'
-                expect_native: 1
+          - php: '7.3.0'
+            os: 'ubuntu-20.04'
+            expect_native: 1
+            xdebug: '3.1.2'
 
-        runs-on: ${{ matrix.os }}
-        continue-on-error: ${{ !!matrix.experimental }}
-        env:
-            PHP_VERSION: ${{ matrix.php }}
-            PHP_TAG: ${{ matrix.tag }}
-            MEMORY_CHECK: ${{ matrix.memcheck }}
-            WERROR: ${{ matrix.werror }}
-            MEMPROF_EXPECT_NATIVE_TRACKING: ${{ matrix.expect_native }}
-        steps:
-            - name: 'Check out repository'
-              uses: 'actions/checkout@v2'
-              with:
-                  path: 'ext'
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ !!matrix.experimental }}
+    env:
+      PHP_VERSION: ${{ matrix.php }}
+      PHP_TAG: ${{ matrix.tag }}
+      MEMORY_CHECK: ${{ matrix.memcheck }}
+      WERROR: ${{ matrix.werror }}
+      MEMPROF_EXPECT_NATIVE_TRACKING: ${{ matrix.expect_native }}
+      XDEBUG_VERSION: ${{ matrix.xdebug }}
+    steps:
+      - name: 'Check out repository'
+        uses: 'actions/checkout@v4'
+        with:
+          path: 'ext'
 
-            - uses: actions/cache@v2
-              with:
-                  path: ~/build-cache/php
-                  key: ${{ runner.os }}-${{ matrix.php }}-${{ matrix.memcheck }}
+      - uses: 'actions/cache@v3'
+        with:
+          path: '~/build-cache/php'
+          key: ${{ runner.os }}-${{ matrix.php }}-${{ matrix.memcheck }}
 
-            - name: 'Build PHP'
-              run: './ext/.github/workflows/test/build-php.sh'
+      - name: 'Build PHP'
+        run: './ext/.github/workflows/test/build-php.sh'
 
-            - name: 'Install xdebug'
-              run: './ext/.github/workflows/test/build-xdebug.sh'
+      - name: 'Install xdebug'
+        run: './ext/.github/workflows/test/build-xdebug.sh'
 
-            - name: 'Build extension'
-              run: './ext/.github/workflows/test/build-extension.sh'
+      - name: 'Build extension'
+        run: './ext/.github/workflows/test/build-extension.sh'
 
-            - name: 'Run tests'
-              run: './ext/.github/workflows/test/tests.sh'
+      - name: 'Run tests'
+        run: './ext/.github/workflows/test/tests.sh'
diff --git a/.github/workflows/test/build-xdebug.sh b/.github/workflows/test/build-xdebug.sh
index cf313e6..c48a863 100755
--- a/.github/workflows/test/build-xdebug.sh
+++ b/.github/workflows/test/build-xdebug.sh
@@ -5,7 +5,7 @@ set -e
 export PATH="$HOME/php/bin:$PATH"
 hash -r
 
-git clone --depth 1 --branch "3.1.2" "https://github.com/xdebug/xdebug.git"
+git clone --depth 1 --branch "${XDEBUG_VERSION}" "https://github.com/xdebug/xdebug.git"
 
 cd xdebug
 
diff --git a/tests/dump-pprof.phpt b/tests/dump-pprof.phpt
index feb6acb..9d1f9b2 100644
--- a/tests/dump-pprof.phpt
+++ b/tests/dump-pprof.phpt
@@ -24,4 +24,4 @@ binary=php://stdout
 0x0000000000000038 memprof_dump_pprof
 ---
 --- profile
-%s
+%a