diff --git a/requirements.txt b/requirements.txt
index 259ef455..6e58e3f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,8 @@
 # This file contains python only requirements to be installed with pip
 # Python packages that cannot be installed with pip (e.g. PyQt5, GDAL) are not included.
 # Usage: pip3 install -r requirements.txt
-numpy >=1.16
+pyqt5==5.12
+numpy>=1.16
 matplotlib>=3.1
 cycler>=0.10
 python-dateutil>=2.1
diff --git a/setup_ubuntu.sh b/setup_ubuntu.sh
index 4830b383..9054a57c 100644
--- a/setup_ubuntu.sh
+++ b/setup_ubuntu.sh
@@ -3,6 +3,7 @@ sudo apt install --reinstall libpng-dev libfreetype6 libfreetype6-dev libgeos-de
 sudo apt install --reinstall python3-dev python3-pyqt5 python3-pyqt5.qtopengl python3-gdal python3-simplejson
 sudo apt install --reinstall python3-pip python3-tk python3-imaging
 
+sudo python3 -m pip install --upgrade pyqt5==5.12
 sudo python3 -m pip install --upgrade pip numpy scipy shapely rtree tk lxml cycler python-dateutil kiwisolver dill
 sudo python3 -m pip install --upgrade vispy pyopengl setuptools svg.path ortools freetype-py fontTools rasterio ezdxf
 sudo python3 -m pip install --upgrade matplotlib qrcode reportlab svglib
\ No newline at end of file