diff --git a/doc/docker/selenium.yml b/doc/docker/selenium.yml
index b02166217d..bc430e193f 100644
--- a/doc/docker/selenium.yml
+++ b/doc/docker/selenium.yml
@@ -14,7 +14,7 @@ services:
     networks:
      - backend
     # Because of: https://github.com/elgalu/docker-selenium/issues/20
-    shm_size: 512m
+    shm_size: '1gb'
 
   app:
     depends_on: