diff --git a/.github/workflows/woo.yml b/.github/workflows/woo.yml
index fa12b9a..64897bc 100644
--- a/.github/workflows/woo.yml
+++ b/.github/workflows/woo.yml
@@ -26,11 +26,11 @@ jobs:
             wp: '5.3'
             wc: '5.4.3'
             coverage: 1
-            phpunit: 'phpunit:6.4.3'
+            phpunit: 'phpunit:6.5.14'
           - php-version: '7.0'
             wp: '5.3'
             wc: '6.4.0'
-            phpunit: 'phpunit:6.4.3'
+            phpunit: 'phpunit:6.5.14'
           - php-version: '7.4'
             wp: '5.3'
             wc: '5.4.3'
@@ -45,11 +45,11 @@ jobs:
           - php-version: '7.0'
             wp: '6.0'
             wc: '5.4.3'
-            phpunit: 'phpunit:6.4.3'
+            phpunit: 'phpunit:6.5.14'
           - php-version: '7.0'
             wp: '6.0'
             wc: '6.4.0'
-            phpunit: 'phpunit:6.4.3'
+            phpunit: 'phpunit:6.5.14'
           - php-version: '7.4'
             wp: '6.0'
             wc: '5.4.3'