diff --git a/Dockerfile b/Dockerfile
index 1f0b86e..affeb00 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ MAINTAINER Nicholas Long nicholas.long@nrel.gov
 
 # Set the version of OpenStudio when building the container. For example `docker build --build-arg
 ARG OPENSTUDIO_VERSION=3.8.0
-ARG OPENSTUDIO_VERSION_EXT="-beta"
+ARG OPENSTUDIO_VERSION_EXT="-rc1"
 ARG OPENSTUDIO_DOWNLOAD_URL=https://openstudio-ci-builds.s3.amazonaws.com/develop/OpenStudio-3.8.0-rc1%2B39b42bad8d-Ubuntu-20.04-x86_64.deb
 
 ENV FINAL_PACKAGE=TRUE