diff --git a/Dockerfile b/Dockerfile
index a523f86..5f22a5e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,6 +58,7 @@ RUN buildDeps=' \
 	&& mkdir -p /usr/src/murmur \
 	&& git clone https://github.com/mumble-voip/mumble.git /usr/src/murmur \
 	&& cd /usr/src/murmur \
+	&& git checkout 1.3.1 \
 	&& git submodule init \
 	&& git submodule update \
 	&& qmake -recursive main.pro CONFIG+="no-client no-g15 no-bonjour grpc" \