diff --git a/CHANGELOG.md b/CHANGELOG.md
index cee75fc2d..435dcf9f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@
 * Upstream replays don't do CONNECT on plaintext HTTP requests (#4876, @HoffmannP)
 * Remove workarounds for old pyOpenSSL versions (#4831, @KarlParkinson)
 * Add fonts to asset filter (~a) (#4928, @elespike)
+* Fix bug that crashed when using `view.flows.resolve` (#4916, @rbdixon)
 
 ## 28 September 2021: mitmproxy 7.0.4
 
diff --git a/mitmproxy/controller.py b/mitmproxy/controller.py
index 56365362f..f6b2a22bb 100644
--- a/mitmproxy/controller.py
+++ b/mitmproxy/controller.py
@@ -65,6 +65,10 @@ class Reply:
             # This will be ignored by the interpreter, but emit a warning
             raise exceptions.ControlException(f"Uncommitted reply: {self.obj}")
 
+    def __deepcopy__(self, memo):
+        # some parts of the console ui may use deepcopy, see https://github.com/mitmproxy/mitmproxy/issues/4916
+        return memo.setdefault(id(self), DummyReply())
+
 
 class DummyReply(Reply):
     """