diff --git a/gitpod/gitpod.Dockerfile b/gitpod/gitpod.Dockerfile
index eb52f1e..df256d3 100644
--- a/gitpod/gitpod.Dockerfile
+++ b/gitpod/gitpod.Dockerfile
@@ -14,8 +14,10 @@ RUN apt install -y shellcheck firefox tree xclip
 
 # Install mindmap dependencies
 RUN wget https://www.edrawsoft.com/archives/mindmaster-7-amd64.deb -O /tmp/mindmaster.deb
-## Mindmaster needs libsmime3.so which is provided by libnss3
+## Requires libsmime3.so provided by libnss3
 RUN apt install -y libnss3
+## Requires libEGL.so.1 provided by libegl1
+RUN apt install -y libegl1
 RUN apt install -y /tmp/mindmaster.deb
 
 # Add custom functions