diff --git a/Gemfile b/Gemfile
index 5d8d11f..c606804 100644
--- a/Gemfile
+++ b/Gemfile
@@ -54,7 +54,7 @@ gem 'ethereum.rb', '~> 2.2'
 gem 'health_check', '~> 3.0'
 
 # appchain sdk
-gem "appchain.rb", github: "cryptape/appchain.rb"
+gem 'appchain.rb', '~> 0.2.0'
 
 # Redis
 gem 'hiredis', '~> 0.6.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index f436d29..9e4fcb7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,14 +1,3 @@
-GIT
-  remote: https://github.com/cryptape/appchain.rb.git
-  revision: 3a7e2288b57a5d2ef2bf850ab548e79fc3a8a6b7
-  specs:
-    appchain.rb (0.2.0)
-      activesupport (~> 5.2.1)
-      ciri-crypto (= 0.1.1)
-      faraday (~> 0.15.3)
-      google-protobuf (~> 3.6)
-      web3-eth (~> 0.2.16)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -60,6 +49,12 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
+    appchain.rb (0.2.0)
+      activesupport (~> 5.2.1)
+      ciri-crypto (= 0.1.1)
+      faraday (~> 0.15.3)
+      google-protobuf (~> 3.6)
+      web3-eth (~> 0.2.16)
     arel (9.0.0)
     ast (2.4.0)
     awesome_print (1.8.0)
@@ -281,7 +276,7 @@ GEM
       thread_safe (~> 0.1)
     unicode-display_width (1.4.0)
     url (0.3.2)
-    web3-eth (0.2.16)
+    web3-eth (0.2.18)
       digest-sha3 (~> 1.1.0)
       rlp (~> 0.7.3)
     webmock (3.4.2)
@@ -300,7 +295,7 @@ PLATFORMS
 
 DEPENDENCIES
   active_model_serializers (~> 0.10.7)
-  appchain.rb!
+  appchain.rb (~> 0.2.0)
   awesome_print
   bootsnap (>= 1.1.0)
   byebug