diff --git a/ChangeLog.md b/ChangeLog.md
index ac59c1389d130f0b50fe840f13188bb30c7c870d..1f45291edfedfe4b70714f5fdd096014f50cb3f0 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog for tahoe-great-black-swamp
 
+## 0.4.0.1
+
+* Package metadata improvements.
+
 ## 0.4.0.0
 
 * ``TahoeLAFS.Storage.Backend.Backend`` has received a number of incompatible
diff --git a/tahoe-great-black-swamp.cabal b/tahoe-great-black-swamp.cabal
index 39800ad83e058008c5bb16449c6bbdc35f88465d..7e23b4feaac5cf1722ee612d7f0872df979fe214 100644
--- a/tahoe-great-black-swamp.cabal
+++ b/tahoe-great-black-swamp.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               tahoe-great-black-swamp
-version:            0.4.0.0
+version:            0.4.0.1
 build-type:         Simple
 synopsis:           An implementation of the "Great Black Swamp" LAFS protocol.
 description: