diff --git a/stream_chat/tests/test_webhook_compression.py b/stream_chat/tests/test_webhook_compression.py
index c22853f..2c7552d 100644
--- a/stream_chat/tests/test_webhook_compression.py
+++ b/stream_chat/tests/test_webhook_compression.py
@@ -98,6 +98,15 @@ def test_truncated_gzip_with_magic_raises(self):
             gunzip_payload(bad)
         assert str(exc_info.value) == INVALID_WEBHOOK_GZIP_FAILED
 
+    def test_corrupt_deflate_stream_raises(self):
+        # A valid gzip header followed by a damaged deflate stream makes
+        # gzip.decompress raise zlib.error, which is not an OSError.
+        corrupt = bytearray(_gzip(JSON_BODY))
+        corrupt[10] = 0xFF
+        with pytest.raises(InvalidWebhookError) as exc_info:
+            gunzip_payload(bytes(corrupt))
+        assert str(exc_info.value) == INVALID_WEBHOOK_GZIP_FAILED
+
 
 class TestDecodeSqsPayload:
     def test_base64_only_no_compression(self):
diff --git a/stream_chat/webhook.py b/stream_chat/webhook.py
index 032aa68..9329363 100644
--- a/stream_chat/webhook.py
+++ b/stream_chat/webhook.py
@@ -18,6 +18,7 @@
 import hashlib
 import hmac
 import json
+import zlib
 from typing import Any, Dict, Optional, Union
 
 from stream_chat.base.exceptions import (
@@ -54,7 +55,7 @@ def gunzip_payload(body: _BytesLike) -> bytes:
         return raw
     try:
         return gzip.decompress(raw)
-    except (gzip.BadGzipFile, OSError, EOFError) as exc:
+    except (gzip.BadGzipFile, OSError, EOFError, zlib.error) as exc:
         raise InvalidWebhookError(INVALID_WEBHOOK_GZIP_FAILED) from exc