2 files changed, 4 insertions, 2 deletions

diff --git a/crypto/src/pqc/crypto/crystals/dilithium/DilithiumEngine.cs b/crypto/src/pqc/crypto/crystals/dilithium/DilithiumEngine.cs

index 2bf54008b..9e41c8684 100644
--- a/crypto/src/pqc/crypto/crystals/dilithium/DilithiumEngine.cs
+++ b/crypto/src/pqc/crypto/crystals/dilithium/DilithiumEngine.cs
@@ -1,4 +1,5 @@
-using Org.BouncyCastle.Crypto.Digests;
+using System;
+using Org.BouncyCastle.Crypto.Digests;
 using Org.BouncyCastle.Security;
 using Org.BouncyCastle.Utilities;
 
diff --git a/crypto/src/pqc/crypto/crystals/dilithium/Packing.cs b/crypto/src/pqc/crypto/crystals/dilithium/Packing.cs

index 25f2beb8a..b849fb228 100644
--- a/crypto/src/pqc/crypto/crystals/dilithium/Packing.cs
+++ b/crypto/src/pqc/crypto/crystals/dilithium/Packing.cs
@@ -1,4 +1,5 @@
-using Org.BouncyCastle.Utilities;
+using System;
+using Org.BouncyCastle.Utilities;
 
 namespace Org.BouncyCastle.Pqc.Crypto.Crystals.Dilithium
 {