diff --git a/build-helpers/make-linux-build-docker-inner.sh b/build-helpers/make-linux-build-docker-inner.sh
index 830cf1b1b6d408b648e9963967e699038d6c4a6e..6f8ea5c1049bbe97257ca15230d3acdb2c711b9e 100755
--- a/build-helpers/make-linux-build-docker-inner.sh
+++ b/build-helpers/make-linux-build-docker-inner.sh
@@ -22,7 +22,7 @@ source .env/bin/activate
 curl -k https://ssl.tiker.net/software/ez_setup.py | python -
 curl -k https://gitlab.tiker.net/inducer/pip/raw/7.0.3/contrib/get-pip.py | python -
 
-pip install pyinstaller packaging
+pip install pyinstaller==3.0 packaging
 git clone --recursive git://github.com/inducer/loopy
 cd loopy