diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d0616d36..2416b44b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,19 +8,17 @@ on:
   push:
     branches:
       - main
-      - development
   pull_request:
     branches:
       - main
-      - development
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   # This workflow contains a single job called "build"
   tests:
-    name: Testing on Python ${{matrix.python-version}} | ${{matrix.sim}}
-    runs-on: ubuntu-20.04
-
+    name: Testing Python ${{matrix.python-version}} on ${{matrix.os}}
+    runs-on: ${{matrix.os}}
+    
     env:
       DISPLAY: :0
 
@@ -45,14 +43,14 @@ jobs:
         shell: bash -l {0}
         run: |
           conda info -a
-          conda install numpy pyyaml pyzmq pytables matplotlib paramiko pytest numba tqdm
-          pip install uncertainties pytest pyqt5==5.12 pyqtgraph==0.11
+          conda install numpy pyyaml pyzmq pytables matplotlib pytest numba tqdm
+          pip install uncertainties pytest pyqt5==5.12 pyqtgraph==0.11 paramiko==2.11
           pip install -r requirements.txt
 
       - name: Package installation
         shell: bash -l {0}
         run: |
-          python setup.py develop
+          pip install -e .
 
       - name: xvfb setup
         shell: bash -l {0}
@@ -61,6 +59,6 @@ jobs:
           # start xvfb in the background
           sudo /usr/bin/Xvfb $DISPLAY -screen 0 1366x768x24 &
 
-      - name: Testing
+      - name: Testing on ref -> ${{github.head_ref || github.ref_name}}
         shell: bash -l {0}
         run: pytest
diff --git a/requirements.txt b/requirements.txt
index 867abfa5..a97728c0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy  # C-like arrays and vectorized functions
 pyzmq  # 0MQ
-paramiko  # SSH API in python
+paramiko==2.11  # SSH API in python
 pyyaml  # yaml
 tables  # pytables HDF5 library in Python
 matplotlib  # Plotting colors
diff --git a/tests/gui/test_main.py b/tests/gui/test_main.py
index 9deaaafb..500e777b 100644
--- a/tests/gui/test_main.py
+++ b/tests/gui/test_main.py
@@ -2,7 +2,7 @@
 import logging
 import unittest
 
-from PyQt5 import QtWidgets, QtCore
+from PyQt5 import QtWidgets
 
 from irrad_control.processes.gui import IrradGUI
 
@@ -19,12 +19,6 @@ def setUpClass(cls):
         cls.irrad_window = IrradGUI()
         cls.irrad_window.show()
 
-        # Execute app
-        #cls.test_app.exec()
-
-        # Allow 5 seconds for testing
-        #QtCore.QTimer.singleShot(5000, cls.test_app.exit)
-
     @classmethod
     def tearDownClass(cls):
         pass