diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index acef1c4..b671fef 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -18,11 +18,11 @@ jobs:
     strategy:
       max-parallel: 3
       matrix:
-        python-version: [2.7, 3.8]
+        python-version: ["3.7", "3.8", "3.9"]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Setup conda
@@ -33,7 +33,7 @@ jobs:
         conda info
     - name: Create conda environment
       run: |
-        conda create -y -q -n env python=${{ matrix.python-version }} numpy scipy matplotlib astropy healpy pyyaml emcee fitsio corner -c conda-forge -c kadrlica
+        conda create -y -q -n env python=${{ matrix.python-version }} numpy scipy matplotlib astropy healpy pyyaml emcee fitsio corner -c conda-forge
         # Add UGALIDIR to environment
         conda env config vars set UGALIDIR=$HOME/.ugali -n env
     - name: Install package
@@ -56,7 +56,7 @@ jobs:
         # Exclude notebook tests
         nosetests -v -I test_notebook.py;
     - name: Test notebooks
-      if: ${{ matrix.python-version == '2.7' }}
+      if: ${{ true }}
       run: |
         source activate env
         conda install -q jupyter nbconvert -c conda-forge
diff --git a/notebooks/kernel_example.ipynb b/notebooks/kernel_example.ipynb
index e1f25e8..7cc5c39 100644
--- a/notebooks/kernel_example.ipynb
+++ b/notebooks/kernel_example.ipynb
@@ -82,7 +82,7 @@
    ],
    "source": [
     "plummer = kernel.factory(name='EllipticalPlummer',lon=0,lat=0,r_h=0.1,ellipticity=0.5, position_angle=45)\n",
-    "print plummer"
+    "print(plummer)"
    ]
   },
   {
@@ -227,9 +227,9 @@
     "# `extension` member, though the meaning of `extension` is \n",
     "# different for each kernel type\n",
     "\n",
-    "print plummer\n",
-    "print king\n",
-    "print exponential"
+    "print(plummer)\n",
+    "print(king)\n",
+    "print(exponential)"
    ]
   },
   {
@@ -317,7 +317,7 @@
     "ker.extension = 0.2\n",
     "ker.r_h = 0.2 \n",
     "\n",
-    "print ker"
+    "print(ker)"
    ]
   },
   {
@@ -340,7 +340,7 @@
     "try:\n",
     "    ker.r_h = 40\n",
     "except ValueError as e:\n",
-    "    print \"Error:\",e\n"
+    "    print(\"Error:\",e)\n"
    ]
   },
   {
@@ -396,8 +396,8 @@
     "plt.sca(ax[1])\n",
     "bins = np.linspace(0,1,100)\n",
     "centers = (bins[:-1]+bins[1:])/2.\n",
-    "plt.hist(angsep(ker.lon,ker.lat,lon,lat),bins=bins,histtype='step',normed=True,label='Polar Radius')\n",
-    "plt.hist(ker.radius(lon,lat),bins=bins,histtype='step',normed=True,label='Elliptical Radius')\n",
+    "plt.hist(angsep(ker.lon,ker.lat,lon,lat),bins=bins,histtype='step',density=True,label='Polar Radius')\n",
+    "plt.hist(ker.radius(lon,lat),bins=bins,histtype='step',density=True,label='Elliptical Radius')\n",
     "plt.plot(centers,[len(bins)*ker.integrate(b1,b2) for b1,b2 in zip(bins[:-1],bins[1:])],label='Elliptical Radius')\n",
     "plt.xlim(0,0.7)\n",
     "plt.xlabel('Radius (deg)')\n",
diff --git a/tests/test_notebook.py b/tests/test_notebook.py
index a18341a..2e18a91 100644
--- a/tests/test_notebook.py
+++ b/tests/test_notebook.py
@@ -5,7 +5,7 @@
 Adapted from:
 https://blog.thedataincubator.com/2016/06/testing-jupyter-notebooks/
 """
-import os
+import os,sys
 import unittest
 import glob
 
@@ -18,11 +18,13 @@ def _notebook_run(path):
     """Execute a notebook via nbconvert and collect output.
        :returns (parsed nb object, execution errors)
     """
+    kernel_name = "python"+str(sys.version_info.major)
     with tempfile.NamedTemporaryFile(suffix=".ipynb") as fout:
         args = ["jupyter", "nbconvert", "--to", "notebook", "--execute",
-          "--ExecutePreprocessor.timeout=60",
-          "--log-level=WARN",
-          "--output", fout.name, path]
+                "--ExecutePreprocessor.timeout=60",
+                "--ExecutePreprocessor.kernel_name=%s"%(kernel_name),
+                "--log-level=WARN",
+                "--output", fout.name, path]
         subprocess.check_call(args)
 
         fout.seek(0)