diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
new file mode 100644
index 00000000..b351615e
--- /dev/null
+++ b/.github/workflows/unit_tests.yml
@@ -0,0 +1,57 @@
+name: Python package
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: ['**']
+  create:
+    branches: [main]
+    tags: ['**']
+  schedule:
+    - cron: "0 4 * * *"
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install stuff for PyQt
+      run: |
+        sudo -E apt-get install --no-install-recommends -y \
+        openmpi-bin lsof \
+        libfontconfig1 libxext6 libx11-xcb1 libxcb-glx0 \
+        libxkbcommon-x11-0 	libgl1-mesa-glx \
+        libncurses5 libreadline5 libdbus-1-3 libopenmpi-dev \
+        libc6-dev libtinfo-dev libncurses5-dev \
+        libx11-dev libreadline-dev \
+        libxcb-icccm4 libxcb-util1 libxcb-image0 libxcb-keysyms1 \
+        libxcb-render0 libxcb-shape0 libxcb-randr0 libxcb-render-util0 \
+        libxcb-xinerama0 libxcb-xfixes0
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8 pytest pytest-qt pytest-cov mne
+        pip install hnn_core
+
+    - name: Install HNN
+      run: |
+        python setup.py install
+
+    - name: Lint with flake8
+      run: |
+        flake8 --count hnn
+    - name: Test with pytest
+      run: |
+        python -m py.test .  --cov=hnn hnn/tests/ --cov-report=xml
diff --git a/hnn/qt_psd.py b/hnn/qt_psd.py
index d27f7fb2..83622e98 100644
--- a/hnn/qt_psd.py
+++ b/hnn/qt_psd.py
@@ -1,4 +1,5 @@
 import os
+import sys
 from math import sqrt
 from copy import deepcopy
 
diff --git a/hnn/qt_sim.py b/hnn/qt_sim.py
index 8de4a660..38a32621 100644
--- a/hnn/qt_sim.py
+++ b/hnn/qt_sim.py
@@ -396,7 +396,6 @@ def plotsimdat(self):
             xlim = (first_spec_trial['time'][0],
                     first_spec_trial['time'][-1])
 
-
             # set the axes of input histograms to match dipole and spec plots
             for ax in hist_axes:
                 ax.set_xlim(xlim)
diff --git a/setup.py b/setup.py
index 59d909c2..6651bcc7 100644
--- a/setup.py
+++ b/setup.py
@@ -37,5 +37,7 @@
           packages=find_packages(),
           package_data={'hnn':
                         ['../param/*.param']},
-          install_requires=['hnn-core']
+          install_requires=['nlopt',
+                            'psutil',
+                            'pyqt5']
           )