diff --git a/README.md b/README.md
index 1a77188..848ad63 100644
--- a/README.md
+++ b/README.md
@@ -100,31 +100,32 @@ sequenceDiagram
   autonumber
   actor User
   participant httprc.Cache
-  participant httprc.Storage
+  participant httprc.registry
+  participant httprc.HTTPClient
   User->>httprc.Cache: Fetch URL `u`
-  activate httprc.Storage
-  httprc.Cache->>httprc.Storage: Fetch local cache for `u`
+  activate httprc.registry
+  httprc.Cache->>httprc.registry: Fetch local cache for `u`
   alt Cache exists
-    httprc.Storage-->httprc.Cache: Return local cache
+    httprc.registry-->httprc.Cache: Return local cache
     httprc.Cache-->>User: Return data
-    Note over httprc.Storage: If the cache exists, there's nothing more to do.<br />The cached content will be updated periodically in httprc.Refresher
-    deactivate httprc.Storage
+    Note over httprc.registry: If the cache exists, there's nothing more to do.<br />The cached content will be updated periodically in httprc.queue
+    deactivate httprc.registry
   else Cache does not exist
-    activate httprc.Fetcher
-    httprc.Cache->>httprc.Fetcher: Fetch remote resource `u`
-    httprc.Fetcher-->>httprc.Cache: Return fetched data
-    deactivate httprc.Fetcher
+    activate httprc.HTTPClient
+    httprc.Cache->>httprc.HTTPClient: Fetch remote resource `u`
+    httprc.HTTPClient-->>httprc.Cache: Return fetched data
+    deactivate httprc.HTTPClient
     httprc.Cache-->>User: Return data
-    httprc.Cache-)httprc.Refresher: Enqueue into auto-refresh queue
-    activate httprc.Refresher
-    loop Refresh Loop
-      Note over httprc.Storage,httprc.Fetcher: Cached contents are updated synchronously
-      httprc.Refresher->>httprc.Refresher: Wait until next refresh
-      httprc.Refresher-->>httprc.Fetcher: Request fetch
-      httprc.Fetcher->>httprc.Refresher: Return fetched data
-      httprc.Refresher-->>httprc.Storage: Store new version in cache
-      httprc.Refresher->>httprc.Refresher: Enqueue into auto-refresh queue (again)
+    httprc.Cache-)httprc.queue: Enqueue into auto-refresh queue
+    activate httprc.queue
+    loop queue Loop
+      Note over httprc.registry,httprc.Fetcher: Cached contents are updated synchronously
+      httprc.queue->>httprc.queue: Wait until next refresh
+      httprc.queue-->>httprc.Fetcher: Request fetch
+      httprc.HTTPClient->>httprc.queue: Return fetched data
+      httprc.queue-->>httprc.registry: Store new version in cache
+      httprc.queue->>httprc.queue: Enqueue into auto-refresh queue (again)
     end
-    deactivate httprc.Refresher
+    deactivate httprc.queue
   end
 ```