diff --git a/ci/install-upstream-wheels.sh b/ci/install-upstream-wheels.sh
index ff5615c17c6..8a14e77b87e 100755
--- a/ci/install-upstream-wheels.sh
+++ b/ci/install-upstream-wheels.sh
@@ -18,8 +18,9 @@ conda uninstall -y --force \
     flox \
     h5netcdf \
     xarray
+# new matplotlib dependency
+python -m pip install --upgrade contourpy
 # to limit the runtime of Upstream CI
-python -m pip install pytest-timeout
 python -m pip install \
     -i https://pypi.anaconda.org/scipy-wheels-nightly/simple \
     --no-deps \
@@ -27,13 +28,8 @@ python -m pip install \
     --upgrade \
     numpy \
     scipy \
+    matplotlib \
     pandas
-python -m pip install \
-    -f https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com \
-    --no-deps \
-    --pre \
-    --upgrade \
-    matplotlib
 python -m pip install \
     --no-deps \
     --upgrade \
@@ -50,3 +46,4 @@ python -m pip install \
     git+https://github.com/SciTools/nc-time-axis \
     git+https://github.com/dcherian/flox \
     git+https://github.com/h5netcdf/h5netcdf
+python -m pip install pytest-timeout