diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index cf10a18d53..3417aeda15 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -56,3 +56,6 @@
 #dnsjava
 -keep class org.xbill.DNS.** {*;}
 -dontwarn sun.net.spi.nameservice.**
+
+#OpenPGP
+-keep class org.openintents.openpgp.** {*;}