diff --git a/.env b/.env
index 23c3a0bf7a..d84bf5123c 100644
--- a/.env
+++ b/.env
@@ -88,7 +88,7 @@ NODE_TAG=22-dev-1.41.1
 
 ### --- VARNISH ---
 
-VARNISH_TAG=6.0-4.18.3
+VARNISH_TAG=6.0-4.18.4
 
 ### --- POSTGRESQL ----
 
diff --git a/tests/10/.env b/tests/10/.env
index e8951eee35..f2f4b6f3af 100644
--- a/tests/10/.env
+++ b/tests/10/.env
@@ -7,7 +7,7 @@ DB_DRIVER=mysql
 
 MARIADB_TAG=11.4-3.30.0
 VALKEY_TAG=8-0.3.2
-VARNISH_TAG=6.0-4.18.3
+VARNISH_TAG=6.0-4.18.4
 SOLR_TAG=8-4.18.2
 SOLR_CONFIG_SET="search_api_solr_4.1.6"
 
diff --git a/tests/11/.env b/tests/11/.env
index d4beb20fb6..3229e898e6 100644
--- a/tests/11/.env
+++ b/tests/11/.env
@@ -7,7 +7,7 @@ DB_DRIVER=mysql
 
 MARIADB_TAG=11.4-3.30.0
 VALKEY_TAG=8-0.3.2
-VARNISH_TAG=6.0-4.18.3
+VARNISH_TAG=6.0-4.18.4
 SOLR_TAG=8-4.18.2
 SOLR_CONFIG_SET="search_api_solr_4.1.6"
 
diff --git a/tests/7/.env b/tests/7/.env
index 33e5f2ee07..1fb790fd5c 100644
--- a/tests/7/.env
+++ b/tests/7/.env
@@ -7,7 +7,7 @@ DB_DRIVER=mysql
 
 MARIADB_TAG=11.4-3.30.0
 VALKEY_TAG=8-0.3.2
-VARNISH_TAG=6.0-4.18.3
+VARNISH_TAG=6.0-4.18.4
 SOLR_TAG=7-4.15.0
 SOLR_CONFIG_SET="search_api_solr_7.x-1.14"