diff --git a/Dockerfile b/Dockerfile
index ad4161af5..567e55473 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,7 +25,8 @@ RUN cd /tmp \
     && git clone https://github.com/sstephenson/bats.git \
     && cd bats \
     && git reset --hard 03608115df2071fff4eaaff1605768c275e5f81f \
-    && ./install.sh /usr/local
+    && ./install.sh /usr/local \
+    && rm -rf /tmp/bats
 
 # install criu
 ENV CRIU_VERSION 1.7