diff --git a/ci/docker/runtime_functions.sh b/ci/docker/runtime_functions.sh
index e2112b540d2f..240842403340 100755
--- a/ci/docker/runtime_functions.sh
+++ b/ci/docker/runtime_functions.sh
@@ -418,6 +418,7 @@ build_ubuntu_cpu_cmake_debug() {
         -DENABLE_TESTCOVERAGE=ON \
         -DUSE_CUDA=OFF \
         -DUSE_TVM_OP=ON \
+        -DPython3_EXECUTABLE=/usr/bin/python3 \
         -DUSE_MKL_IF_AVAILABLE=OFF \
         -DUSE_OPENMP=OFF \
         -DUSE_OPENCV=ON \
@@ -801,6 +802,7 @@ build_ubuntu_cpu_large_tensor() {
         -DUSE_CUDA=OFF                          \
         -DUSE_CUDNN=OFF                         \
         -DUSE_TVM_OP=ON                         \
+        -DPython3_EXECUTABLE=/usr/bin/python3   \
         -DUSE_MKLDNN=OFF                        \
         -DCMAKE_BUILD_TYPE=Release              \
         -DUSE_INT64_TENSOR_SIZE=ON              \