diff --git a/docker/Build b/docker/Build
old mode 100644
new mode 100755
index adb90a9b..67c7b7f0
--- a/docker/Build
+++ b/docker/Build
@@ -2,7 +2,7 @@
 set -e
 
 pip3 install --upgrade pip setuptools wheel
-pip3 install pillow python-slugify psutil pyinstaller raven pyqt5
+pip3 install pillow python-slugify psutil pyinstaller==3.1.1 raven pyqt5 certifi
 gem install fpm
 
 cd /app