diff --git a/Dockerfile b/Dockerfile
index 022449b531053fb0d7224ebbab325ced44d7c6d3..a0fae184ca0fef7875c3482bbff3197a098d365f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,8 @@ COPY . .
 
 RUN apt update && apt upgrade
 RUN apt install -y python3  \
-                python3-pip
+                python3-pip \
+                python3-tk
 
 # this is enough to run clik
 RUN pip install -e ./python/