[#8557] update akismet version (optional)
diff --git a/requirements-optional.txt b/requirements-optional.txt
index 6b5ef0b..f68ec31 100644
--- a/requirements-optional.txt
+++ b/requirements-optional.txt
@@ -8,4 +8,4 @@
 mediawiki2html  # GPL
 
 # for spam checking
-akismet>=1.0.1
+akismet>=1.3