diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ef889c..65e6dc5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -102,6 +102,12 @@ jobs:
             dependencies: highest
             codecov: true
             php-ini-values: assert.exception=1, zend.assertions=1, opcache.enable=1, opcache.enable_cli=1, opcache.optimization_level=-1, opcache.jit_buffer_size=4096M, opcache.jit=1205
+          - os: ubuntu-latest
+            php-version: "8.4"
+            tools: composer:snapshot
+            dependencies: highest
+            codecov: true
+            php-ini-values: zend.assertions=1, opcache.enable=1, opcache.enable_cli=1, opcache.optimization_level=-1, opcache.jit_buffer_size=4096M, opcache.jit=1205
 
     steps:
       - name: Checkout
@@ -115,6 +121,10 @@ jobs:
           extensions: ${{ env.PHP_EXTENSIONS }}
           ini-values: ${{ matrix.php-ini-values }}
 
+      - name: Update composer to snapshot
+        if: matrix.php-version == '8.4'
+        run: composer self-update --snapshot
+
       - name: Determine composer cache directory on Linux
         if: matrix.os == 'ubuntu-latest'
         run: echo "COMPOSER_CACHE_DIR=$(composer config cache-dir)" >> $GITHUB_ENV