diff --git a/docker-build.sh b/docker-build.sh
index b102399..1a73535 100755
--- a/docker-build.sh
+++ b/docker-build.sh
@@ -5,6 +5,7 @@ version=${1:-master}
 export PREFIX=/opt/gcc-arm-none-eabi-8-2018-q4-major/bin/
 
 cd /solo/targets/stm32l432
+git fetch
 git checkout ${version}
 version=$(git describe)
 make cbor