diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7628f32..472644f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        python: [3.7, 3.8, "3.10", "3.11"]
-        go: ["1.19", "1.16"]
+        python: [3.7, 3.8, "3.11", "3.13"]
+        go: ["1.25", "1.16"]
 
     runs-on: ${{ matrix.os  }}
 
diff --git a/changes.rst b/changes.rst
index 02e6f49..323d631 100644
--- a/changes.rst
+++ b/changes.rst
@@ -1,7 +1,7 @@
 .. currentmodule:: bitproto
 
-Version 1.2.1 (Pending)
------------------------
+Version 1.2.1
+-------------
 
 .. _version-1.2.1:
 
diff --git a/compiler/bitproto/__init__.py b/compiler/bitproto/__init__.py
index 611bb4a..a2714de 100644
--- a/compiler/bitproto/__init__.py
+++ b/compiler/bitproto/__init__.py
@@ -8,5 +8,5 @@
 
 """
 
-__version__ = "1.2.0"
+__version__ = "1.2.1"
 __description__ = "bit level data interchange format."