diff --git a/tools/docker-format/Dockerfile b/tools/docker-format/Dockerfile
index 7023078b..ab6e3556 100644
--- a/tools/docker-format/Dockerfile
+++ b/tools/docker-format/Dockerfile
@@ -3,6 +3,6 @@ FROM ubuntu:cosmic
 RUN apt update && \
     apt install -y clang-format golang git python-pip && \
     go get -v github.com/bazelbuild/buildtools/buildifier && \
-    pip install cmake_format
+    pip install cmake_format==0.4.5
 
 CMD ["/bin/bash"]
diff --git a/tools/travis/check_format.sh b/tools/travis/check_format.sh
index 696fed94..c07ef8c2 100755
--- a/tools/travis/check_format.sh
+++ b/tools/travis/check_format.sh
@@ -21,6 +21,6 @@ if ! which buildifier >/dev/null; then
   go get -v github.com/bazelbuild/buildtools/buildifier
 fi
 # Install cmake-format.
-pip install --user cmake_format
+pip install --user cmake_format==0.4.5
 # Check format.
 tools/format.sh