diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index 536e696a..4158ad19 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -12,41 +12,38 @@ jobs:
           - "3.10"
           - "3.11"
           # - "3.12"
-        igraph: ["igraph", "no-igraph"]
     steps:
       # This cancels any such job that is still runnning
-    - name: Cancel Previous Runs
-      uses: styfle/cancel-workflow-action@0.6.0
-      with:
-        access_token: ${{ github.token }}
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install Linux libraries
-      run: |
-        sudo apt-get install -y libdbus-1-3 libxkbcommon-x11-0 libxcb-icccm4 \
-          libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 \
-          libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0 graphviz graphviz-dev
-    - name: Install dependencies
-      run: |
-        pip install --upgrade pip
-        pip install zstandard==0.16.0
-        pip install numpy
-        pip install flybrains --no-deps
-        pip install git+https://github.com/siavashk/pycpd@master
-        pip install k3d
-        pip install pyarrow
-    - name: Install navis
-      run: pip install -e .[dev,vispy-pyqt5,pathos,cloudvolume]
-    - run: pip install python-igraph
-      if: ${{ matrix.igraph == 'igraph' }}
-    - name: Report dependency versions
-      run: pip freeze -r requirements.txt
-    - name: Test
-      uses: GabrielBB/xvfb-action@v1
-      with:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.6.0
+        with:
+          access_token: ${{ github.token }}
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install Linux libraries
         run: |
-          export NAVIS_HEADLESS=TRUE
-          pytest --verbose
+          sudo apt-get install -y libdbus-1-3 libxkbcommon-x11-0 libxcb-icccm4 \
+            libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 \
+            libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0 graphviz graphviz-dev
+      - name: Install dependencies
+        run: |
+          pip install --upgrade pip
+          pip install zstandard==0.16.0
+          pip install numpy
+          pip install flybrains --no-deps
+          pip install git+https://github.com/siavashk/pycpd@master
+          pip install k3d
+          pip install pyarrow
+      - name: Install navis
+        run: pip install -e .[dev,vispy-pyqt5,pathos,cloudvolume]
+      - name: Report dependency versions
+        run: pip freeze -r requirements.txt
+      - name: Test
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: |
+            export NAVIS_HEADLESS=TRUE
+            pytest --verbose
diff --git a/requirements.txt b/requirements.txt
index 40774d48..e05d112e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 h5py>=3.1
 matplotlib>=3.6
 morphops>=0.1.11
-ncollpyde>=0.18
+ncollpyde>=0.18,<0.20
 networkx>=2.4
 numpy>=1.16
 pandas>=1.0
diff --git a/tests/common.py b/tests/common.py
deleted file mode 100644
index 488069b0..00000000
--- a/tests/common.py
+++ /dev/null
@@ -1,21 +0,0 @@
-import warnings
-
-try:
-    import igraph
-except ImportError:
-    igraph = None
-    warnings.warn('iGraph library not found. Will test only with NetworkX.')
-
-import navis
-
-
-def with_igraph(func):
-    def wrapper(*args, **kwargs):
-        navis.config.use_igraph = False
-        res1 = func(*args, **kwargs)
-        if igraph:
-            navis.config.use_igraph = True
-            res2 = func(*args, **kwargs)
-            assert res1 == res2
-        return res1
-    return wrapper
diff --git a/tests/test_neurons.py b/tests/test_neurons.py
index c0f6721f..d766974b 100644
--- a/tests/test_neurons.py
+++ b/tests/test_neurons.py
@@ -4,8 +4,6 @@
 
 import pytest
 
-from .common import with_igraph
-
 
 def test_deepcopy():
     nrn = navis.core.BaseNeuron()
@@ -23,7 +21,6 @@ def test_from_swc_multi(swc_source_multi, parallel):
     assert isinstance(n, navis.NeuronList)
 
 
-@with_igraph
 def test_from_gml():
     n = navis.example_neurons(n=1, source='gml')
     assert isinstance(n, navis.TreeNeuron)