diff --git a/gnu/packages/python-web.scm b/gnu/packages/python-web.scm
index 65a6879b56..a80d57fb68 100644
--- a/gnu/packages/python-web.scm
+++ b/gnu/packages/python-web.scm
@@ -292,6 +292,7 @@ (define-public python-aiohttp
     (propagated-inputs
      (list python-aiodns
            python-aiosignal
+           python-attrs
            python-async-timeout
            python-charset-normalizer
            python-frozenlist