diff --git a/.github/actions/install-conda/action.yml b/.github/actions/install-conda/action.yml
index 6989e6cdb02..6660035d875 100644
--- a/.github/actions/install-conda/action.yml
+++ b/.github/actions/install-conda/action.yml
@@ -31,7 +31,7 @@ runs:
 
     - name: Install dependencies
       shell: bash -l {0}
-      run: micromamba install --yes --file ci-dev/${{ inputs.type }}_requirements.txt --file ci/extra_requirements.txt --file ci/requirements.txt
+      run: micromamba install --yes --file ci-dev/${{ inputs.type }}_requirements.txt --file ci/extra_requirements.txt --file ci/requirements.txt "proj<9.8.0"
 
     - name: Download Cartopy Maps
       if: ${{ inputs.need-cartopy == 'true' }}
diff --git a/ci/extra_requirements.txt b/ci/extra_requirements.txt
index dfefc91bfc1..f35d73f9e25 100644
--- a/ci/extra_requirements.txt
+++ b/ci/extra_requirements.txt
@@ -1,4 +1,4 @@
-cartopy==0.24.0
+cartopy==0.25.0
 dask==2026.1.2
 netCDF4==1.7.4
 shapely==2.1.2
diff --git a/tests/plots/baseline/test_declarative_events.png b/tests/plots/baseline/test_declarative_events.png
index 868ac10b53f..0fd3398657a 100644
Binary files a/tests/plots/baseline/test_declarative_events.png and b/tests/plots/baseline/test_declarative_events.png differ
diff --git a/tests/plots/baseline/test_latlon.png b/tests/plots/baseline/test_latlon.png
index d1876166afa..67b53c3837e 100644
Binary files a/tests/plots/baseline/test_latlon.png and b/tests/plots/baseline/test_latlon.png differ
diff --git a/tests/plots/test_declarative.py b/tests/plots/test_declarative.py
index 0effc37a73b..63e537a0c4b 100644
--- a/tests/plots/test_declarative.py
+++ b/tests/plots/test_declarative.py
@@ -475,7 +475,8 @@ def test_declarative_contour_convert_units():
 
 
 @pytest.mark.mpl_image_compare(remove_text=True,
-                               tolerance=5.34 if version_check('matplotlib<3.10') else 0.246)
+                               tolerance=7.85 if (version_check('matplotlib<3.10') or
+                                   version_check('cartopy<0.25')) else 0.246)
 @needs_cartopy
 def test_declarative_events():
     """Test that resetting traitlets properly propagates."""
@@ -827,7 +828,8 @@ def test_global():
 
 
 @pytest.mark.mpl_image_compare(remove_text=True,
-                               tolerance=5.101 if version_check('matplotlib<3.10') else 0.044)
+                               tolerance=7.891 if (version_check('matplotlib<3.10') or
+                                   version_check('cartopy<0.25')) else 0.019)
 @needs_cartopy
 def test_latlon():
     """Test our handling of lat/lon information."""
@@ -1784,6 +1786,8 @@ def test_declarative_title_fontsize():
     return pc.figure
 
 
+# Broken on Cartopy 0.25 due to 0-area filled contour. See SciTools/cartopy#2635
+@pytest.mark.xfail(version_check('cartopy==0.25.0'), reason='SciTools/cartopy#2635')
 @pytest.mark.mpl_image_compare(remove_text=False,
                                tolerance=0.951 if version_check('cartopy<0.23') else 0.)
 @needs_cartopy