diff --git a/dev/data/manifest-variants.json b/dev/data/manifest-variants.json
index 64271327c5..8286a4b8d6 100644
--- a/dev/data/manifest-variants.json
+++ b/dev/data/manifest-variants.json
@@ -2,7 +2,7 @@
     "manifest": {
         "manifest_version": 2,
         "name": "Yomichan",
-        "version": "20.12.6.0",
+        "version": "20.12.31.0",
         "description": "Japanese dictionary with Anki integration",
         "author": "Alex Yatskov",
         "icons": {
diff --git a/ext/manifest.json b/ext/manifest.json
index 3695c0531d..a234d75c0a 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "Yomichan",
-    "version": "20.12.6.0",
+    "version": "20.12.31.0",
     "description": "Japanese dictionary with Anki integration",
     "author": "Alex Yatskov",
     "icons": {