diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21ba5fa9..d093c1a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # CHANGELOG
 
+## V5.4.0
+* **Fix:** Include missing classes in proguard when pro guard is enabled to prevent SDK crashing in particular scenarios.
+
 ## V5.3.0
 * **Fix:** Do not auto close browser when payment app does not exist and deeplink fails to open.
 
diff --git a/build.gradle b/build.gradle
index 61bf275d..524fb537 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
         sample_app_version = '1.0'
         sample_app_code_version = 1
 
-        omise_sdk_version = '5.3.0'
-        omise_sdk_code_version = 53
+        omise_sdk_version = '5.4.0'
+        omise_sdk_code_version = 54
 
         compile_sdk_version = 34
         build_tools_version = '29.0.3'