Bump version to v3.1.0

Change-Id: Id6df65a1048375919a347f0af3af5f3bdbda22b7
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 685ee60..247f2f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [v3.1.0-rc1] - 2025-12-01
+## [v3.1.0] - 2025-12-04
 
 ### Fixed
 
diff --git a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
index a843d82..460737d 100644
--- a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
+++ b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
@@ -61,7 +61,7 @@
 @Command(
     name = "korapxmltool",
     mixinStandardHelpOptions = true,
-    version = ["korapxmltool v3.1.0-rc1"],
+    version = ["korapxmltool v3.1.0"],
     usageHelpAutoWidth = false,
     usageHelpWidth = 200,
     description = ["Converts between KorAP-XML ZIP format and formats like CoNLL-U, Krill, word2vec, NOW\n"+
diff --git a/build.gradle b/build.gradle
index 5574fe3..e3dea96 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,4 +5,4 @@
 }
 
 // Zentrale Projektversion für korapxmltool
-version = '3.1.0-rc1'
+version = '3.1.0'