diff --git a/superset/config.py b/superset/config.py
index 79f723d45248f..27e5655c9bf35 100644
--- a/superset/config.py
+++ b/superset/config.py
@@ -665,6 +665,9 @@ class CeleryConfig(object):
 SESSION_COOKIE_SECURE = False  # Prevent cookie from being transmitted over non-tls?
 SESSION_COOKIE_SAMESITE = "Lax"  # One of [None, 'Lax', 'Strict']
 
+# Flask configuration variables
+SEND_FILE_MAX_AGE_DEFAULT = 60 * 60 * 24 * 365  # Cache static resources
+
 # URI to database storing the example data, points to
 # SQLALCHEMY_DATABASE_URI by default if set to `None`
 SQLALCHEMY_EXAMPLES_URI = None