diff --git a/.github/workflows/autoformat.yml b/.github/workflows/autoformat.yml
index ae7577a..e81b47e 100644
--- a/.github/workflows/autoformat.yml
+++ b/.github/workflows/autoformat.yml
@@ -16,7 +16,7 @@ jobs:
         with:
           coverage: none
           extensions: mbstring
-          php-version: 8.1
+          php-version: 8.3
 
       - run: composer install --no-interaction --no-progress --no-suggest
 
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 9343786..fbf7891 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -16,7 +16,7 @@ jobs:
       - name: "Install PHP with extensions"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.1
+          php-version: 8.3
 
       - name: "Install locked dependencies with composer"
         run: composer install --no-interaction --no-progress
@@ -144,7 +144,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           coverage: pcov
-          php-version: 8.1
+          php-version: 8.3
 
       - name: "Install locked dependencies with composer"
         run: composer install --no-interaction --no-progress