diff --git a/python/paddle/fluid/tests/unittests/mkldnn/CMakeLists.txt b/python/paddle/fluid/tests/unittests/mkldnn/CMakeLists.txt
index c7fe530a3dedfb5ed892b67045c83727c264e745..69991a446d7a1a98efa9bfe983aeee26d2d949b2 100644
--- a/python/paddle/fluid/tests/unittests/mkldnn/CMakeLists.txt
+++ b/python/paddle/fluid/tests/unittests/mkldnn/CMakeLists.txt
@@ -5,4 +5,5 @@ foreach(TEST_OP ${TEST_OPS})
     py_test_modules(${TEST_OP} MODULES ${TEST_OP})
 endforeach(TEST_OP)
 set_tests_properties(test_concat_mkldnn_op PROPERTIES TIMEOUT 120)
+set_tests_properties(test_conv3d_mkldnn_op PROPERTIES TIMEOUT 120)
 set_tests_properties(test_flags_mkldnn_ops_on_off PROPERTIES TIMEOUT 120)