diff --git a/src/http.zig b/src/http.zig
index 25d133bd44..a2d8661008 100644
--- a/src/http.zig
+++ b/src/http.zig
@@ -1069,6 +1069,11 @@ pub fn writeToStream(this: *HTTPClient, comptime is_ssl: bool, socket: NewHTTPCo
             this.state.request_stage = .done;
             stream_buffer.release();
             stream.detach();
+            if (this.flags.upgrade_state == .upgraded) {
+                this.state.flags.received_last_chunk = true;
+                // upgraded connection will end when the body is done (no half-open connections)
+                this.progressUpdate(is_ssl, if (is_ssl) &http_thread.https_context else &http_thread.http_context, socket);
+            }
         } else {
             // only report drain if we send everything and previous we had something to send
             if (!wasEmpty) {