diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 47edd2318ffdf..38238ebdcca37 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -637506,7 +637506,7 @@
    "support"
   ],
   "tools/wptrunner/requirements_safari.txt": [
-   "22a07532657dadb79c404fcb61a26e1a127b8cc2",
+   "5a1d26b8b9bccd5cbbe637c7d115808b4fd85f49",
    "support"
   ],
   "tools/wptrunner/requirements_sauce.txt": [
diff --git a/testing/web-platform/tests/tools/wptrunner/requirements_safari.txt b/testing/web-platform/tests/tools/wptrunner/requirements_safari.txt
index 22a07532657da..5a1d26b8b9bcc 100644
--- a/testing/web-platform/tests/tools/wptrunner/requirements_safari.txt
+++ b/testing/web-platform/tests/tools/wptrunner/requirements_safari.txt
@@ -1,2 +1,2 @@
 mozprocess == 0.26
-selenium==3.14.0
+selenium==3.13.0