diff --git a/BUILD b/BUILD
index 9506cb8d..7a6671dd 100644
--- a/BUILD
+++ b/BUILD
@@ -158,6 +158,7 @@ proto_library(
         "//envoy/extensions/access_loggers/open_telemetry/v3alpha:pkg",
         "//envoy/extensions/access_loggers/stream/v3:pkg",
         "//envoy/extensions/access_loggers/wasm/v3:pkg",
+        "//envoy/extensions/cache/simple_http_cache/v3alpha:pkg",
         "//envoy/extensions/clusters/aggregate/v3:pkg",
         "//envoy/extensions/clusters/dynamic_forward_proxy/v3:pkg",
         "//envoy/extensions/clusters/redis/v3:pkg",
diff --git a/envoy/extensions/cache/simple_http_cache/v3alpha/BUILD b/envoy/extensions/cache/simple_http_cache/v3alpha/BUILD
new file mode 100644
index 00000000..ee92fb65
--- /dev/null
+++ b/envoy/extensions/cache/simple_http_cache/v3alpha/BUILD
@@ -0,0 +1,9 @@
+# DO NOT EDIT. This file is generated by tools/proto_format/proto_sync.py.
+
+load("@envoy_api//bazel:api_build_system.bzl", "api_proto_package")
+
+licenses(["notice"])  # Apache 2
+
+api_proto_package(
+    deps = ["@com_github_cncf_udpa//udpa/annotations:pkg"],
+)
diff --git a/envoy/extensions/cache/simple_http_cache/v3alpha/config.proto b/envoy/extensions/cache/simple_http_cache/v3alpha/config.proto
new file mode 100644
index 00000000..1b42e9b3
--- /dev/null
+++ b/envoy/extensions/cache/simple_http_cache/v3alpha/config.proto
@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package envoy.extensions.cache.simple_http_cache.v3alpha;
+
+import "udpa/annotations/status.proto";
+
+option java_package = "io.envoyproxy.envoy.extensions.cache.simple_http_cache.v3alpha";
+option java_outer_classname = "ConfigProto";
+option java_multiple_files = true;
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: SimpleHttpCache CacheFilter storage plugin]
+
+// [#extension: envoy.cache.simple_http_cache]
+message SimpleHttpCacheConfig {
+}
diff --git a/envoy/extensions/filters/http/cache/v3alpha/cache.proto b/envoy/extensions/filters/http/cache/v3alpha/cache.proto
index 9e140a38..5f0a5bef 100644
--- a/envoy/extensions/filters/http/cache/v3alpha/cache.proto
+++ b/envoy/extensions/filters/http/cache/v3alpha/cache.proto
@@ -19,7 +19,7 @@ option (udpa.annotations.file_status).package_version_status = ACTIVE;
 
 // [#protodoc-title: HTTP Cache Filter]
 
-// [#extension: envoy.filters.http.cache.simple_http_cache]
+// [#extension: envoy.filters.http.cache]
 message CacheConfig {
   option (udpa.annotations.versioning).previous_message_type =
       "envoy.config.filter.http.cache.v2alpha.CacheConfig";
@@ -50,6 +50,7 @@ message CacheConfig {
   }
 
   // Config specific to the cache storage implementation.
+  // [#extension-category: envoy.filters.http.cache]
   google.protobuf.Any typed_config = 1 [(validate.rules).any = {required: true}];
 
   // List of matching rules that defines allowed *Vary* headers.
diff --git a/envoy/extensions/filters/http/cache/v4alpha/cache.proto b/envoy/extensions/filters/http/cache/v4alpha/cache.proto
index 283e8f53..5297a3d1 100644
--- a/envoy/extensions/filters/http/cache/v4alpha/cache.proto
+++ b/envoy/extensions/filters/http/cache/v4alpha/cache.proto
@@ -19,7 +19,7 @@ option (udpa.annotations.file_status).package_version_status = NEXT_MAJOR_VERSIO
 
 // [#protodoc-title: HTTP Cache Filter]
 
-// [#extension: envoy.filters.http.cache.simple_http_cache]
+// [#extension: envoy.filters.http.cache]
 message CacheConfig {
   option (udpa.annotations.versioning).previous_message_type =
       "envoy.extensions.filters.http.cache.v3alpha.CacheConfig";
@@ -50,6 +50,7 @@ message CacheConfig {
   }
 
   // Config specific to the cache storage implementation.
+  // [#extension-category: envoy.filters.http.cache]
   google.protobuf.Any typed_config = 1 [(validate.rules).any = {required: true}];
 
   // List of matching rules that defines allowed *Vary* headers.
diff --git a/versioning/BUILD b/versioning/BUILD
index 822e07f0..338a8cdb 100644
--- a/versioning/BUILD
+++ b/versioning/BUILD
@@ -41,6 +41,7 @@ proto_library(
         "//envoy/extensions/access_loggers/open_telemetry/v3alpha:pkg",
         "//envoy/extensions/access_loggers/stream/v3:pkg",
         "//envoy/extensions/access_loggers/wasm/v3:pkg",
+        "//envoy/extensions/cache/simple_http_cache/v3alpha:pkg",
         "//envoy/extensions/clusters/aggregate/v3:pkg",
         "//envoy/extensions/clusters/dynamic_forward_proxy/v3:pkg",
         "//envoy/extensions/clusters/redis/v3:pkg",