diff --git a/build.gradle b/build.gradle
index 035dd39e..b4d8ac81 100644
--- a/build.gradle
+++ b/build.gradle
@@ -262,7 +262,7 @@ android {
 			jniDebuggable false
 			minifyEnabled true
 			shrinkResources true
-			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
 
 //			signingConfig android.signingConfigs.release
 		}
diff --git a/proguard-project.txt b/proguard-project.txt
index f2fe1559..6bc351c9 100644
--- a/proguard-project.txt
+++ b/proguard-project.txt
@@ -18,3 +18,5 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+-keep class io.github.sspanak.tt9.languages.definitions.** { *; }