diff --git a/DESCRIPTION b/DESCRIPTION
index b5e07f9c..17fabc45 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: TreeDist
 Type: Package
 Title: Distances Between Phylogenetic Trees
-Version: 1.1.0.9001
+Version: 1.1.1
 Authors@R: c(person("Martin R.", 'Smith',
                   email="martin.smith@durham.ac.uk", 
                   role=c("aut", "cre", "cph", "prg"), 
@@ -65,7 +65,6 @@ LazyData: true
 ByteCompile: true
 Encoding: UTF-8
 Language: en-GB
-Classification/MSC-2020: 05C05, 92-04, 92-08
 X-schema.org-keywords: phylogenetics, tree-distance
 RoxygenNote: 7.1.1
 Roxygen: list(markdown = TRUE)
diff --git a/NEWS.md b/NEWS.md
index 21c9694c..cefa4fc6 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# TreeDist 1.1.0.9001 (development)
+# TreeDist 1.1.1
 
 - Fix range errors when calculating tree distances.
 
diff --git a/codemeta.json b/codemeta.json
index 173e5f3c..71130902 100644
--- a/codemeta.json
+++ b/codemeta.json
@@ -10,7 +10,7 @@
   "codeRepository": "https://github.com/ms609/TreeDist",
   "issueTracker": "https://github.com/ms609/TreeDist/issues",
   "license": "https://spdx.org/licenses/GPL-3.0",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "programmingLanguage": {
     "@type": "ComputerLanguage",
     "name": "R",