diff --git a/scripts/release/linux_x64/Dockerfile b/scripts/release/linux_x64/Dockerfile
index f5184a4..68a8999 100644
--- a/scripts/release/linux_x64/Dockerfile
+++ b/scripts/release/linux_x64/Dockerfile
@@ -1,5 +1,6 @@
 FROM p2pool_build_ubuntu
 ARG P2POOL_VERSION
 ARG P2POOL_CHECKOUT
+ENV P2POOL_CHECKOUT=${P2POOL_CHECKOUT}
 ADD . /p2pool/
 RUN /p2pool/scripts/release/linux_x64/p2pool_linux_x64.sh p2pool-${P2POOL_VERSION}-linux-x64 ${P2POOL_VERSION}