diff --git a/doc/source/whatsnew/v0.22.0 b/doc/source/whatsnew/v0.22.0.txt similarity index 100% rename from doc/source/whatsnew/v0.22.0 rename to doc/source/whatsnew/v0.22.0.txt diff --git a/doc/source/whatsnew/v0.23.0 b/doc/source/whatsnew/v0.23.0.txt similarity index 100% rename from doc/source/whatsnew/v0.23.0 rename to doc/source/whatsnew/v0.23.0.txt