diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3a43f45dc..790784a42 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,7 +70,7 @@ test:json-api:
     paths:
       - lbrynet-${OS}.zip
   script:
-    - pip install pyinstaller
+    - pip install pyinstaller==3.5
     - python3.7 docker/set_build.py
     - pip install -e .
     - pyinstaller --onefile --name lbrynet lbry/extras/cli.py
@@ -125,7 +125,7 @@ build:windows:
   after_script:
     - rmdir -Recurse venv
   script:
-    - pip install pyinstaller
+    - pip install pyinstaller==3.5
     - python docker/set_build.py
     - pip install -e .
     - pyinstaller --additional-hooks-dir=scripts/. --icon=icons/lbry256.ico -F -n lbrynet lbry/extras/cli.py