diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2901a85c..d09d5e80 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -109,7 +109,7 @@ jobs:
 
       - name: Launch JupyterLab
         if: matrix.os == 'ubuntu'
-        run: jlpm run start:detached
+        run: jlpm start:detached
         working-directory: ui-tests
 
       - name: Wait for JupyterLab
@@ -121,7 +121,7 @@ jobs:
 
       - name: Run UI Tests
         if: matrix.os == 'ubuntu'
-        run: jlpm run test
+        run: jlpm test
         working-directory: ui-tests
 
       - name: Upload UI Test artifacts
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-0-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-0-linux.png
index 153d236d..1cc55509 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-0-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-0-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-1-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-1-linux.png
index 729f1b2e..5ad77324 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-1-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-1-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-2-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-2-linux.png
index b7ea3ddd..8f44c534 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-2-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-2-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-3-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-3-linux.png
index e3063cf5..a0b3f716 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-3-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-ipynb-cell-3-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-0-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-0-linux.png
index 153d236d..1cc55509 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-0-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-0-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-1-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-1-linux.png
index 3f60fc8b..dcc8a1d1 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-1-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-1-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-10-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-10-linux.png
index bad8fdd2..28fcd796 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-11-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-11-linux.png
index ef9bd6e4..d9fa5ae4 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-11-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-11-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-12-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-12-linux.png
index 9a458561..01c76483 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-13-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-13-linux.png
index cbd4debf..9172208e 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-14-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-14-linux.png
index cbd4debf..9172208e 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-2-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-2-linux.png
index 39dee5b0..01e6d533 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-3-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-3-linux.png
index b11f583a..48f4b7cf 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-4-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-4-linux.png
index f05c4494..ac979813 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-5-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-5-linux.png
index d160563e..93877eda 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-6-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-6-linux.png
index 39dee5b0..01e6d533 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-7-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-7-linux.png
index a4eaa409..d0a3e231 100644
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diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-8-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-8-linux.png
index d1208b29..abf0e24f 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-8-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-8-linux.png differ
diff --git a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-9-linux.png b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-9-linux.png
index 2a927da5..a1ec88f7 100644
Binary files a/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-9-linux.png and b/ui-tests/tests/ipympl.test.ts-snapshots/ipympl-update-ipynb-cell-9-linux.png differ
diff --git a/ui-tests/tests/notebooks/ipympl.ipynb b/ui-tests/tests/notebooks/ipympl.ipynb
index 21780049..5ac2924f 100644
--- a/ui-tests/tests/notebooks/ipympl.ipynb
+++ b/ui-tests/tests/notebooks/ipympl.ipynb
@@ -13,7 +13,11 @@
     "import numpy as np\n",
     "\n",
     "fig = plt.figure()\n",
-    "plt.plot(np.sin(np.linspace(0, 20, 100)));"
+    "plt.plot(np.sin(np.linspace(0, 20, 100)))\n",
+    "\n",
+    "# Remove text to avoid tiny differences in rendered output.\n",
+    "from matplotlib.testing.decorators import remove_ticks_and_titles\n",
+    "remove_ticks_and_titles(fig)"
    ]
   },
   {
diff --git a/ui-tests/tests/notebooks/ipympl_update.ipynb b/ui-tests/tests/notebooks/ipympl_update.ipynb
index d309bde5..619ef129 100644
--- a/ui-tests/tests/notebooks/ipympl_update.ipynb
+++ b/ui-tests/tests/notebooks/ipympl_update.ipynb
@@ -13,7 +13,11 @@
     "import numpy as np\n",
     "\n",
     "fig = plt.figure()\n",
-    "plt.plot(np.sin(np.linspace(0, 20, 100)));"
+    "plt.plot(np.sin(np.linspace(0, 20, 100)))\n",
+    "\n",
+    "# Remove text to avoid tiny differences in rendered output.\n",
+    "from matplotlib.testing.decorators import remove_ticks_and_titles\n",
+    "remove_ticks_and_titles(fig)"
    ]
   },
   {