diff --git a/CHANGES.md b/CHANGES.md
index 633a8a9..4777f17 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+v3.1.0
+
+* Dialyzer and api spec improvements
+
 v3.0
 
 * drop support for OTP versions before 17.0
diff --git a/src/jsx.app.src b/src/jsx.app.src
index 52f6715..c4c28ab 100644
--- a/src/jsx.app.src
+++ b/src/jsx.app.src
@@ -1,7 +1,7 @@
 {application, jsx,
 [
     {description, "a streaming, evented json parsing toolkit"},
-    {vsn, "3.0.0"},
+    {vsn, "3.1.0"},
     {modules, [
         jsx,
         jsx_encoder,