diff --git a/src/node_http2.cc b/src/node_http2.cc
index 0d0faaaa752c4a..cf99e21928d89b 100644
--- a/src/node_http2.cc
+++ b/src/node_http2.cc
@@ -605,6 +605,12 @@ Http2Session::Http2Session(Http2State* http2_state,
 Http2Session::~Http2Session() {
   CHECK(!is_in_scope());
   Debug(this, "freeing nghttp2 session");
+  // Ensure that all `Http2Stream` instances and the memory they hold
+  // on to are destroyed before the nghttp2 session is.
+  for (const auto& [id, stream] : streams_) {
+    stream->Detach();
+  }
+  streams_.clear();
   // Explicitly reset session_ so the subsequent
   // current_nghttp2_memory_ check passes.
   session_.reset();