diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9c8656e7..dca77927 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: [ '5.6', '7.4', '8.3' ]
+        php-version: [ '7.4', '8.3' ]
 
     steps:
       - name: Checkout repository