diff --git a/tools/feature_matrix.py b/tools/feature_matrix.py
index 7b2051495b829..55e2d701438b4 100644
--- a/tools/feature_matrix.py
+++ b/tools/feature_matrix.py
@@ -68,7 +68,7 @@ class Feature(IntEnum):
   },
   Feature.JS_BIGINT_INTEGRATION: {
     'chrome': 67,
-    'firefox': 68,
+    'firefox': 78,
     'safari': 150000,
     'node': 130000,
   },