diff --git a/CHANGELOG.md b/CHANGELOG.md
index 403c0f2..30ecc0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## XAVIER development version
+## XAVIER 3.1.1
 
 - New contributing guide available on GitHub and the documentation website. (#114, @kelly-sovacool)
 - New `xavier debug` subcommand to determine the base directory for debugging purposes. (#114, @kelly-sovacool)
diff --git a/CITATION.cff b/CITATION.cff
index c8f815c..ecee53e 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -46,5 +46,5 @@ identifiers:
   - description: Archived snapshots of all versions
     type: doi
     value: 10.5281/zenodo.12727315
-version: v3.1.0
-date-released: "2024-08-27"
+version: v3.1.1
+date-released: "2024-10-02"
diff --git a/VERSION b/VERSION
index 0f9d6b1..94ff29c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.1.0-dev
+3.1.1