diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e1f82cd..0a849dd9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # OST Wallet SDK Changelog
 
+## Version 2.3.3
+### Changes:
+* Proguard usage to remove verbose and debug logs.
+
 ## Version 2.3.2
 ### Bug Fixes:
 * Fixed a bug where some android phones were not able to provide pin.
diff --git a/README.md b/README.md
index 5a517a96..6dfd45a0 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,7 @@ compileOptions {
 
 ```
 dependencies {
-    implementation 'com.ost:ost-wallet-sdk-android:2.3.0'
+    implementation 'com.ost:ost-wallet-sdk-android:2.3.3'
     ...
     ...
     ...
diff --git a/ostsdk/build.gradle b/ostsdk/build.gradle
index 7050bb4c..8e1b9985 100644
--- a/ostsdk/build.gradle
+++ b/ostsdk/build.gradle
@@ -11,6 +11,11 @@
 apply plugin: 'com.android.library'
 apply from: 'maven-push.gradle'
 
+/**
+ * Run Proguard to shrink the Java bytecode in release builds.
+ */
+def enableProguardInReleaseBuilds = true
+
 android {
     compileSdkVersion 28
     defaultConfig {
@@ -40,7 +45,8 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled enableProguardInReleaseBuilds
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
     compileOptions {
diff --git a/ostsdk/gradle.properties b/ostsdk/gradle.properties
index 487dcfba..69a89188 100644
--- a/ostsdk/gradle.properties
+++ b/ostsdk/gradle.properties
@@ -22,9 +22,9 @@
 # org.gradle.parallel=true
 
 #Increase version when publishing.
-VERSION_NAME=2.3.2
+VERSION_NAME=2.3.3
 #Increase version code when publishing.
-VERSION_CODE=36
+VERSION_CODE=38
 
 #Everything else.
 GROUP=com.ost
diff --git a/ostsdk/proguard-android-optimize.txt b/ostsdk/proguard-android-optimize.txt
new file mode 100644
index 00000000..54ebd824
--- /dev/null
+++ b/ostsdk/proguard-android-optimize.txt
@@ -0,0 +1,4 @@
+#Don't do arithmetic and variable simplification
+-optimizations !code/simplification/arithmetic,!code/allocation/variable
+#Number of Optimization passes
+-optimizationpasses 5
\ No newline at end of file
diff --git a/ostsdk/proguard-rules.pro b/ostsdk/proguard-rules.pro
index 7a520dd6..8a3b39cd 100644
--- a/ostsdk/proguard-rules.pro
+++ b/ostsdk/proguard-rules.pro
@@ -20,11 +20,19 @@
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
 
-# This will strip `Log.v`, `Log.d`, and `Log.i` statements and will leave `Log.w` and `Log.e` statements intact.
-
+#Don't mix class names
+-dontusemixedcaseclassnames
+#Don't ignore non-public library classes.
+-dontskipnonpubliclibraryclasses
+-dontpreverify
+#show logs
+-verbose
+#Don't obfuscate the input class files.
+-keep class **
+-keepclassmembers class *{*;}
+-keepattributes *
+#strip down debug and verbose logs
 -assumenosideeffects class android.util.Log {
-    public static boolean isLoggable(java.lang.String, int);
-    public static int v(...);
-    public static int d(...);
-    public static int i(...);
-}
+    public static *** d(...);
+    public static *** v(...);
+}
\ No newline at end of file