diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index 77bf8aa4..da1109bd 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,6 +1,6 @@
-Unreleased
+0.8.4
 ------------
-* dropped support for GHC 8.0.* and 8.2.* and added support for GHC 8.10.*
+* dropped support for GHC 8.0.* and 8.2.* and added support for GHC 8.10.* and 9.0.*
 
 0.8.3
 ------------
diff --git a/xlsx.cabal b/xlsx.cabal
index fedcae7b..73eca118 100644
--- a/xlsx.cabal
+++ b/xlsx.cabal
@@ -1,6 +1,6 @@
 Name:                xlsx
 
-Version:             0.8.3
+Version:             0.8.4
 
 Synopsis:            Simple and incomplete Excel file parser/writer
 Description: