diff --git a/OpenKeychain/proguard-rules-release.pro b/OpenKeychain/proguard-rules-release.pro
index 59e13843c..68905babf 100644
--- a/OpenKeychain/proguard-rules-release.pro
+++ b/OpenKeychain/proguard-rules-release.pro
@@ -18,4 +18,4 @@
 #   https://code.google.com/p/android/issues/detail?id=78377
 # * Remove unneeded Bouncy Castle packages to be under 64K limit
 #   http://developer.android.com/tools/building/multidex.html
--keep class !android.support.v7.view.menu.**,!org.bouncycastle.crypto.tls.**,!org.bouncycastle.pqc.**,!org.bouncycastle.x509.**,** {*;}
+-keep class !android.support.v7.view.menu.**,!org.bouncycastle.crypto.tls.**,!org.bouncycastle.pqc.**,!org.bouncycastle.x509.**,!org.bouncycastle.jcajce.provider.asymmetric.dstu.**,!org.bouncycastle.jcajce.provider.asymmetric.ecgost.**,!org.bouncycastle.jcajce.provider.asymmetric.gost.**,!org.bouncycastle.jcajce.provider.asymmetric.DSTU4145,!org.bouncycastle.jcajce.provider.asymmetric.ECGOST,!org.bouncycastle.jcajce.provider.asymmetric.GOST,!org.bouncycastle.asn1.cmp.**,!org.bouncycastle.asn1.crmf.**,!org.bouncycastle.asn1.dvcs.**,!org.bouncycastle.asn1.smime.**,!org.bouncycastle.asn1.tsp.**,** {*;}