diff --git a/ci/test_python.sh b/ci/test_python.sh
index e57da8b39..a6c2cd288 100755
--- a/ci/test_python.sh
+++ b/ci/test_python.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# SPDX-FileCopyrightText: Copyright (c) 2022-2023, NVIDIA CORPORATION.
+# SPDX-FileCopyrightText: Copyright (c) 2022-2025, NVIDIA CORPORATION.
 # SPDX-License-Identifier: Apache-2.0
 
 # Common setup steps shared by Python test jobs
@@ -8,6 +8,9 @@ set -euo pipefail
 
 . /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"
 CPP_CHANNEL=$(rapids-download-conda-from-github cpp)
 PYTHON_CHANNEL=$(rapids-download-conda-from-github python)
diff --git a/conda/environments/all_cuda-129_arch-aarch64.yaml b/conda/environments/all_cuda-129_arch-aarch64.yaml
index fb92ff3b3..858f329cb 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:
 - c-compiler
diff --git a/conda/environments/all_cuda-129_arch-x86_64.yaml b/conda/environments/all_cuda-129_arch-x86_64.yaml
index d7a357d06..702acafef 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:
 - c-compiler
diff --git a/conda/environments/all_cuda-130_arch-aarch64.yaml b/conda/environments/all_cuda-130_arch-aarch64.yaml
index 4434d6b80..e1613e866 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:
 - c-compiler
diff --git a/conda/environments/all_cuda-130_arch-x86_64.yaml b/conda/environments/all_cuda-130_arch-x86_64.yaml
index f7f83cc93..126b1f18c 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:
 - c-compiler
diff --git a/dependencies.yaml b/dependencies.yaml
index 6d2dc4f38..7bb2c3e81 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -85,8 +85,8 @@ files:
     includes:
       - docs
 channels:
-  - rapidsai
   - rapidsai-nightly
+  - rapidsai
   - conda-forge
 dependencies:
   build: