diff --git a/build/release.sh b/build/release.sh
index fba1527a..897476aa 100755
--- a/build/release.sh
+++ b/build/release.sh
@@ -48,8 +48,7 @@ docker build -t $docker_tag -t $gcr_tag -f deploy/Dockerfile .
 echo
 echo "Release info:"
 echo "VERSION=$VERSION"
-sha1sum --tag cadvisor
-md5sum --tag cadvisor
+sha256sum --tag cadvisor
 echo "docker image: $docker_tag"
 echo "gcr.io image: $gcr_tag"
 
diff --git a/docs/development/releasing.md b/docs/development/releasing.md
index 29d9e558..a9258dea 100644
--- a/docs/development/releasing.md
+++ b/docs/development/releasing.md
@@ -47,7 +47,7 @@ Command: `make release`
 - Try to build it from the release branch, since we include that in the binary version
 - Verify the ldflags output, in particular check the Version, BuildUser, and GoVersion are expected
 
-Once the build is complete, check the VERSION and note the sha1 and md5 hashes.
+Once the build is complete, check the VERSION and note the sha256 hash.
 
 ## 4. Push the Docker images