diff --git a/tests/ci/api_common_install.sh b/tests/ci/api_common_install.sh
index dad983387..92112fbcc 100755
--- a/tests/ci/api_common_install.sh
+++ b/tests/ci/api_common_install.sh
@@ -17,6 +17,8 @@ if [ "$2" = 'LDAP' ]; then
     cd tests && sudo ./ldapprepare.sh && cd ..
 fi
 
+sudo apt-get update -y && sudo apt-get install -y python3.6
+sudo rm /usr/bin/python && sudo ln -s /usr/bin/python3.6 /usr/bin/python
 
 
 # prepare a chart file for API_DB test...
diff --git a/tests/ci/api_run.sh b/tests/ci/api_run.sh
index 753353fcc..c5577c1ef 100755
--- a/tests/ci/api_run.sh
+++ b/tests/ci/api_run.sh
@@ -28,9 +28,12 @@ set +e
 
 docker ps
 
+python --version
+pip -V
+
 # run db auth api cases
 if [ "$1" = 'DB' ]; then
-    pybot -v ip:$2 -v HARBOR_PASSWORD:Harbor12345 $DIR/../../tests/robot-cases/Group0-BAT/API_DB.robot
+    robot -v ip:$2 -v HARBOR_PASSWORD:Harbor12345 $DIR/../../tests/robot-cases/Group0-BAT/API_DB.robot
 elif [ "$1" = 'LDAP' ]; then
     # run ldap api cases
     python $DIR/../../tests/configharbor.py -H $IP -u $HARBOR_ADMIN -p $HARBOR_ADMIN_PASSWD -c auth_mode=ldap_auth \
@@ -39,7 +42,7 @@ elif [ "$1" = 'LDAP' ]; then
                                   ldap_search_password=admin \
                                   ldap_base_dn=dc=example,dc=com \
                                   ldap_uid=cn
-    pybot -v ip:$2 -v HARBOR_PASSWORD:Harbor12345 $DIR/../../tests/robot-cases/Group0-BAT/API_LDAP.robot
+    robot -v ip:$2 -v HARBOR_PASSWORD:Harbor12345 $DIR/../../tests/robot-cases/Group0-BAT/API_LDAP.robot
 else
     rc=999
 fi