diff --git a/.gitpod.Dockerfile b/.gitpod.Dockerfile
index 1caea79ef2c22def8044530014e301e13ed11c00..013bb80e36ab44e9383672191c6f3a75aea5b8e0 100644
--- a/.gitpod.Dockerfile
+++ b/.gitpod.Dockerfile
@@ -4,7 +4,7 @@ USER root
 
 RUN add-apt-repository universe
 RUN apt update
-RUN apt install graphviz
+RUN apt -y install graphviz
 
 USER gitpod