diff --git a/.github/workflows/scheduled_test.yml b/.github/workflows/scheduled_test.yml
index 66e348a4a1..bc09f44992 100644
--- a/.github/workflows/scheduled_test.yml
+++ b/.github/workflows/scheduled_test.yml
@@ -99,7 +99,7 @@ jobs:
             -e LDAP_CONFIG_ADMIN_PASSWORD=admin \
             -e LDAP_SKIP_DEFAULT_TREE=yes \
             -v $PWD/ldifs:/ldifs \
-            bitnami/openldap:latest
+            bitnami/openldap:2.6.4
           cat server-config.tpl.yaml > server-config.yaml
 
       - name: Run test
@@ -168,7 +168,7 @@ jobs:
             -e LDAP_CONFIG_ADMIN_PASSWORD=admin \
             -e LDAP_SKIP_DEFAULT_TREE=yes \
             -v $PWD/ldifs:/ldifs \
-            bitnami/openldap:latest
+            bitnami/openldap:2.6.4
           cat server-config.tpl.yaml > server-config.yaml
 
       - name: Run test
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a044507d88..96cd0ebbab 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -62,7 +62,7 @@ jobs:
             -e LDAP_CONFIG_ADMIN_PASSWORD=admin \
             -e LDAP_SKIP_DEFAULT_TREE=yes \
             -v $PWD/ldifs:/ldifs \
-            bitnami/openldap:latest
+            bitnami/openldap:2.6.4
           cat server-config.tpl.yaml > server-config.yaml
 
       - name: Run Jest