diff --git a/wrappers/java/proguard.mustache b/wrappers/java/proguard.mustache
index 6bb199a26..4ba8b9d44 100644
--- a/wrappers/java/proguard.mustache
+++ b/wrappers/java/proguard.mustache
@@ -7,6 +7,9 @@
 -keep class {{package}}.{{classImplName}} {*;}
 {{/classes}}
 
+# Liblinphone tools
+-keep class org.linphone.core.tools.* {*;}
+
 # Mediastreamer classes
 -keep class org.linphone.mediastream.Factory {*;}
 -keep class org.linphone.mediastream.MediastreamerAndroidContext {*;}