diff --git a/ci/gpu/build.sh b/ci/gpu/build.sh
index 5646c268301..797a2f72f5d 100755
--- a/ci/gpu/build.sh
+++ b/ci/gpu/build.sh
@@ -219,7 +219,7 @@ else
     KAFKA_CONDA_FILE=${KAFKA_CONDA_FILE//-/=} #convert to conda install
 
     gpuci_logger "Installing $CUDF_CONDA_FILE & $KAFKA_CONDA_FILE"
-    conda install -c ${CONDA_ARTIFACT_PATH} "$CUDF_CONDA_FILE" "$KAFKA_CONDA_FILE"
+    mamba install -c ${CONDA_ARTIFACT_PATH} "$CUDF_CONDA_FILE" "$KAFKA_CONDA_FILE"
 
     install_dask