diff --git a/docker-compose.yaml b/docker-compose.yaml
index a6563eb..4597119 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -35,6 +35,7 @@ services:
 
   geckodriver: # separate docker container for pdf-download. This hugely improves stability (and creates shorter build times for the containers)
     image: ${GECKODRIVER_IMG}
+    shm_size: 2gb
     environment:
       - START_VNC=${HEADFULL-false} # as opposed to headless, used when requiring supervision (eg. for websites that crash)
       - START_XVFB=${HEADFULL-false}