diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index c5ae9ac..8be9545 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -15,10 +15,6 @@ jobs:
       fail-fast: false
       matrix:
         php-version:
-          - "5.4"
-          - "5.5"
-          - "5.6"
-          - "7.0"
           - "7.1"
           - "7.2"
           - "7.3"