diff --git a/ci/build_wheel_pylibraft.sh b/ci/build_wheel_pylibraft.sh
index 3740a6099a..f20d88f2f4 100755
--- a/ci/build_wheel_pylibraft.sh
+++ b/ci/build_wheel_pylibraft.sh
@@ -5,6 +5,15 @@ set -euo pipefail
 
 package_dir="python/pylibraft"
 
+# Downloads libraft wheels from this current build,
+# then ensures 'pylibraft' wheel builds always use the 'libraft' just built in the same CI run.
+#
+# Using env variable PIP_CONSTRAINT is necessary to ensure the constraints
+# are used when creating the isolated build environment.
+RAPIDS_PY_WHEEL_NAME="libraft_${RAPIDS_PY_CUDA_SUFFIX}" rapids-download-wheels-from-s3 cpp /tmp/libraft_dist
+echo "libraft-${RAPIDS_PY_CUDA_SUFFIX} @ file://$(echo /tmp/libraft_dist/libraft_*.whl)" > /tmp/constraints.txt
+export PIP_CONSTRAINT="/tmp/constraints.txt"
+
 # Set up skbuild options. Enable sccache in skbuild config options
 export SKBUILD_CMAKE_ARGS="-DDETECT_CONDA_ENV=OFF;"
 
diff --git a/ci/build_wheel_raft_dask.sh b/ci/build_wheel_raft_dask.sh
index 4570d9c68d..afd286006d 100755
--- a/ci/build_wheel_raft_dask.sh
+++ b/ci/build_wheel_raft_dask.sh
@@ -5,6 +5,17 @@ set -euo pipefail
 
 package_dir="python/raft-dask"
 
+RAPIDS_PY_CUDA_SUFFIX="$(rapids-wheel-ctk-name-gen ${RAPIDS_CUDA_VERSION})"
+
+# Downloads libraft wheels from this current build,
+# then ensures 'raft-dask' wheel builds always use the 'libraft' just built in the same CI run.
+#
+# Using env variable PIP_CONSTRAINT is necessary to ensure the constraints
+# are used when creating the isolated build environment.
+RAPIDS_PY_WHEEL_NAME="libraft_${RAPIDS_PY_CUDA_SUFFIX}" rapids-download-wheels-from-s3 cpp /tmp/libraft_dist
+echo "libraft-${RAPIDS_PY_CUDA_SUFFIX} @ file://$(echo /tmp/libraft_dist/libraft_*.whl)" > /tmp/constraints.txt
+export PIP_CONSTRAINT="/tmp/constraints.txt"
+
 # Set up skbuild options. Enable sccache in skbuild config options
 export SKBUILD_CMAKE_ARGS="-DDETECT_CONDA_ENV=OFF;"