diff --git a/ci/test_python.sh b/ci/test_python.sh
index f7b55281e..fdc897fb7 100755
--- a/ci/test_python.sh
+++ b/ci/test_python.sh
@@ -9,6 +9,9 @@ cd "$(dirname "$(realpath "${BASH_SOURCE[0]}")")"/../
 
 . /opt/conda/etc/profile.d/conda.sh
 
+rapids-logger "Configuring conda strict channel priority"
+conda config --set channel_priority strict
+
 rapids-logger "Downloading artifacts from previous jobs"
 PYTHON_CHANNEL=$(rapids-download-from-github "$(rapids-package-name "conda_python" nx-cugraph --pure)")
 
diff --git a/conda/environments/all_cuda-129_arch-aarch64.yaml b/conda/environments/all_cuda-129_arch-aarch64.yaml
index 77d813418..7f63a0d55 100644
--- a/conda/environments/all_cuda-129_arch-aarch64.yaml
+++ b/conda/environments/all_cuda-129_arch-aarch64.yaml
@@ -1,8 +1,8 @@
 # This file is generated by `rapids-dependency-file-generator`.
 # To make changes, edit ../../dependencies.yaml and run `rapids-dependency-file-generator`.
 channels:
-- rapidsai
 - rapidsai-nightly
+- rapidsai
 - conda-forge
 dependencies:
 - cuda-version=12.9
diff --git a/conda/environments/all_cuda-129_arch-x86_64.yaml b/conda/environments/all_cuda-129_arch-x86_64.yaml
index afe40cf74..d3a3f9c96 100644
--- a/conda/environments/all_cuda-129_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-129_arch-x86_64.yaml
@@ -1,8 +1,8 @@
 # This file is generated by `rapids-dependency-file-generator`.
 # To make changes, edit ../../dependencies.yaml and run `rapids-dependency-file-generator`.
 channels:
-- rapidsai
 - rapidsai-nightly
+- rapidsai
 - conda-forge
 dependencies:
 - cuda-version=12.9
diff --git a/conda/environments/all_cuda-130_arch-aarch64.yaml b/conda/environments/all_cuda-130_arch-aarch64.yaml
index 88208c389..7145eaf91 100644
--- a/conda/environments/all_cuda-130_arch-aarch64.yaml
+++ b/conda/environments/all_cuda-130_arch-aarch64.yaml
@@ -1,8 +1,8 @@
 # This file is generated by `rapids-dependency-file-generator`.
 # To make changes, edit ../../dependencies.yaml and run `rapids-dependency-file-generator`.
 channels:
-- rapidsai
 - rapidsai-nightly
+- rapidsai
 - conda-forge
 dependencies:
 - cuda-version=13.0
diff --git a/conda/environments/all_cuda-130_arch-x86_64.yaml b/conda/environments/all_cuda-130_arch-x86_64.yaml
index 764fb71f1..e026b37d5 100644
--- a/conda/environments/all_cuda-130_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-130_arch-x86_64.yaml
@@ -1,8 +1,8 @@
 # This file is generated by `rapids-dependency-file-generator`.
 # To make changes, edit ../../dependencies.yaml and run `rapids-dependency-file-generator`.
 channels:
-- rapidsai
 - rapidsai-nightly
+- rapidsai
 - conda-forge
 dependencies:
 - cuda-version=13.0
diff --git a/dependencies.yaml b/dependencies.yaml
index d0a1cb56b..05bdebafd 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -67,8 +67,8 @@ files:
       - test_python_common
       - test_python_nx_cugraph
 channels:
-  - rapidsai
   - rapidsai-nightly
+  - rapidsai
   - conda-forge
 dependencies:
   checks: