diff --git a/docs/news.rst b/docs/news.rst
index fbceb8126..de3d7d09a 100644
--- a/docs/news.rst
+++ b/docs/news.rst
@@ -21,10 +21,12 @@ Scrapy 2.6.3 (to be determined)
 
     -   Twisted_: 17.9.0 → 18.9.0
 
-    -   zope.interface_: 4.1.3 → 4.4.2
+    -   zope.interface_: 4.1.3 → 5.0.0
 
     (:issue:`5621`, :issue:`5632`)
 
+-   Fixed the documentation build (:issue:`5631`).
+
 
 .. _release-2.6.2:
 
diff --git a/setup.py b/setup.py
index 421cd6b9e..b6aa3159b 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ install_requires = [
     'queuelib>=1.4.2',
     'service_identity>=18.1.0',
     'w3lib>=1.17.0',
-    'zope.interface>=4.4.2',
+    'zope.interface>=5.0.0',
     'protego>=0.1.15',
     'itemadapter>=0.1.0',
     'setuptools',
diff --git a/tox.ini b/tox.ini
index 0d9d7987e..f4ee16e3d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -86,7 +86,7 @@ deps =
     service_identity==18.1.0
     Twisted[http2]==18.9.0
     w3lib==1.17.0
-    zope.interface==4.4.2
+    zope.interface==5.0.0
     -rtests/requirements.txt
 
     # mitmproxy 4.0.4+ requires upgrading some of the pinned dependencies