diff --git a/backend/scripts/install-chromedriver.sh b/backend/scripts/install-chromedriver.sh
index 8394797b..6582e872 100644
--- a/backend/scripts/install-chromedriver.sh
+++ b/backend/scripts/install-chromedriver.sh
@@ -1,3 +1,9 @@
+# lock global
+touch /tmp/install.lock
+
+# lock
+touch /tmp/install-chromedriver.lock
+
 export DEBIAN_FRONTEND=noninteractive \
   && apt-get update \
   && apt-get install \
@@ -15,4 +21,10 @@ export DEBIAN_FRONTEND=noninteractive \
   && curl -sL "$BASE_URL/$VERSION/chromedriver_linux64.zip" -o /tmp/driver.zip \
   && unzip /tmp/driver.zip \
   && chmod 755 chromedriver \
-  && mv chromedriver /usr/local/bin
\ No newline at end of file
+  && mv chromedriver /usr/local/bin
+
+# unlock global
+rm /tmp/install.lock
+
+# unlock
+rm /tmp/install-chromedriver.lock
\ No newline at end of file