diff --git a/ci/test_external.sh b/ci/test_external.sh
index c6435351..87b68dc3 100755
--- a/ci/test_external.sh
+++ b/ci/test_external.sh
@@ -7,7 +7,7 @@ rapids-logger "Create test_external conda environment"
 . /opt/conda/etc/profile.d/conda.sh
 
 # Install external dependencies into test_external conda environment
-rapids-mamba-retry env update -f ./ci/utils/external_dependencies.yaml
+rapids-conda-retry env update -f ./ci/utils/external_dependencies.yaml
 
 conda activate test_external
 
diff --git a/ci/utils/external_dependencies.yaml b/ci/utils/external_dependencies.yaml
index 59092973..265a9144 100644
--- a/ci/utils/external_dependencies.yaml
+++ b/ci/utils/external_dependencies.yaml
@@ -7,9 +7,8 @@ dependencies:
   - cudf==24.2.*
   - dask-cudf==24.2.*
   - cuxfilter==24.2.*
-  - cuda-version=11.8
-  - python=3.10
-  - tensorflow
+  - cuda-version=12.0
+  - python>=3.9,<3.11
   - xarray-spatial
   - pycaret
   - graphistry