diff --git a/README.md b/README.md
index a1c78680..3db73f44 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 </p>
 <p align="center">
 <a href="https://join.slack.com/t/tile38/shared_invite/enQtMzQ0OTEwMDUxMzc5LTc0NTJjZmM3YjFhOGZiZGU2NDNjOWEwM2Q5ZWE3MzFiYWZkZDIyN2U2ZmUzZDBmODU0MjI1ZjQ0N2Y1M2I1NTg"><img src="https://img.shields.io/badge/slack-channel-orange.svg" alt="Slack Channel"></a>
-<a href="https://github.com/tidwall/tile38/releases"><img src="https://img.shields.io/badge/version-1.12.2-green.svg?" alt="Version"></a>
+<a href="https://github.com/tidwall/tile38/releases"><img src="https://img.shields.io/badge/version-1.12.3-green.svg?" alt="Version"></a>
 <a href="https://travis-ci.org/tidwall/tile38"><img src="https://travis-ci.org/tidwall/tile38.svg?branch=master" alt="Build Status"></a>
 <a href="https://hub.docker.com/r/tile38/tile38"><img src="https://img.shields.io/badge/docker-ready-blue.svg" alt="Docker Ready"></a>
 </p>
diff --git a/build.sh b/build.sh
index a70bca7c..7711c92f 100755
--- a/build.sh
+++ b/build.sh
@@ -18,9 +18,8 @@ if [ "$PROTECTED_MODE" == "no" ]; then
 fi
 
 if [ "$1" == "update-version" ]; then
-	# update the versions in the README.md and Dockerfile
+	# update the versions in the README.md
 	sed -i '' "s/version-[0-9]*\.[0-9]*\.[0-9]*/version-$VERSION/g" README.md
-	sed -i '' "s/ENV\ TILE38_VERSION\ [0-9]*\.[0-9]*\.[0-9]*/ENV TILE38_VERSION $VERSION/g" docker/Dockerfile
 	exit
 fi