diff --git a/superset/views/base.py b/superset/views/base.py
index 8574a7f6d5b50..d84209458c4b2 100644
--- a/superset/views/base.py
+++ b/superset/views/base.py
@@ -191,7 +191,7 @@ def generate_download_headers(
 
 
 def deprecated(
-    eol_version: str = "3.0.0",
+    eol_version: str = "4.0.0",
     new_target: Optional[str] = None,
 ) -> Callable[[Callable[..., FlaskResponse]], Callable[..., FlaskResponse]]:
     """
diff --git a/superset/views/core.py b/superset/views/core.py
index f584901316b7d..33b794a0bb2b1 100755
--- a/superset/views/core.py
+++ b/superset/views/core.py
@@ -221,7 +221,7 @@ def generate_json(
     @permission_name("explore_json")
     @expose("/explore_json/data/<cache_key>", methods=("GET",))
     @check_resource_permissions(check_explore_cache_perms)
-    @deprecated(eol_version="3.0")
+    @deprecated(eol_version="4.0.0")
     def explore_json_data(self, cache_key: str) -> FlaskResponse:
         """Serves cached result data for async explore_json calls
 
@@ -269,7 +269,7 @@ def explore_json_data(self, cache_key: str) -> FlaskResponse:
     @expose("/explore_json/", methods=EXPLORE_JSON_METHODS)
     @etag_cache()
     @check_resource_permissions(check_datasource_perms)
-    @deprecated(eol_version="3.0")
+    @deprecated(eol_version="4.0.0")
     def explore_json(
         self, datasource_type: str | None = None, datasource_id: int | None = None
     ) -> FlaskResponse: