diff --git a/openpgp.d.ts b/openpgp.d.ts
index 2b5509b4..76a4072c 100644
--- a/openpgp.d.ts
+++ b/openpgp.d.ts
@@ -782,7 +782,7 @@ export namespace enums {
     bzip2 = 3,
   }
 
-  export type hashNames = 'md5' | 'sha1' | 'ripemd' | 'sha256' | 'sha384' | 'sha512' | 'sha224';
+  export type hashNames = 'md5' | 'sha1' | 'ripemd' | 'sha256' | 'sha384' | 'sha512' | 'sha224' | 'sha3_256' | 'sha3_512';
   enum hash {
     md5 = 1,
     sha1 = 2,
@@ -791,6 +791,8 @@ export namespace enums {
     sha384 = 9,
     sha512 = 10,
     sha224 = 11,
+    sha3_256 = 12,
+    sha3_512 = 14
   }
 
   export type packetNames = 'publicKeyEncryptedSessionKey' | 'signature' | 'symEncryptedSessionKey' | 'onePassSignature' | 'secretKey' | 'publicKey'
diff --git a/src/key/factory.js b/src/key/factory.js
index c485b35c..43f07c06 100644
--- a/src/key/factory.js
+++ b/src/key/factory.js
@@ -216,7 +216,9 @@ async function wrapKeyObject(secretKeyPacket, secretSubkeyPackets, options, conf
     signatureProperties.preferredHashAlgorithms = createPreferredAlgos([
       // prefer fast asm.js implementations (SHA-256)
       enums.hash.sha256,
-      enums.hash.sha512
+      enums.hash.sha512,
+      enums.hash.sha3_256,
+      enums.hash.sha3_512
     ], config.preferredHashAlgorithm);
     signatureProperties.preferredCompressionAlgorithms = createPreferredAlgos([
       enums.compression.uncompressed
diff --git a/test/general/key.js b/test/general/key.js
index 341b95d8..07c7b092 100644
--- a/test/general/key.js
+++ b/test/general/key.js
@@ -2262,7 +2262,7 @@ function versionSpecificTests() {
         ]);
       }
       const hash = openpgp.enums.hash;
-      expect(selfSignature.preferredHashAlgorithms).to.eql([hash.sha256, hash.sha512]);
+      expect(selfSignature.preferredHashAlgorithms).to.eql([hash.sha256, hash.sha512, hash.sha3_256, hash.sha3_512]);
       const compr = openpgp.enums.compression;
       expect(selfSignature.preferredCompressionAlgorithms).to.eql([compr.uncompressed]);
 
@@ -2317,7 +2317,7 @@ function versionSpecificTests() {
         ]);
       }
       const hash = openpgp.enums.hash;
-      expect(selfSignature.preferredHashAlgorithms).to.eql([hash.sha224, hash.sha256, hash.sha512]);
+      expect(selfSignature.preferredHashAlgorithms).to.eql([hash.sha224, hash.sha256, hash.sha512, hash.sha3_256, hash.sha3_512]);
       const compr = openpgp.enums.compression;
       expect(selfSignature.preferredCompressionAlgorithms).to.eql([compr.zlib, compr.uncompressed]);