diff --git a/src/Brutal.Dev.StrongNameSigner.Tests/SignAssemblyTests.cs b/src/Brutal.Dev.StrongNameSigner.Tests/SignAssemblyTests.cs
index 25ea014..26263f4 100644
--- a/src/Brutal.Dev.StrongNameSigner.Tests/SignAssemblyTests.cs
+++ b/src/Brutal.Dev.StrongNameSigner.Tests/SignAssemblyTests.cs
@@ -1,6 +1,7 @@
 using System;
 using System.IO;
 using System.Security.Cryptography;
+using System.Threading.Tasks;
 using Shouldly;
 using Xunit;
 
@@ -264,5 +265,14 @@ public void SignAssembly_InPlaceWithoutPdb_Should_Succeed()
         Directory.Delete(tempDir, true);
       }
     }
+
+    [Fact]
+    public void SignAssembly_InParralel_Should_Succeed()
+    {
+      Parallel.Invoke(
+        SignAssembly_Public_API_Test,
+        SignAssembly_Should_Reassemble_NET_45_Assembly_Correctly
+      );
+    }
   }
 }
diff --git a/src/Brutal.Dev.StrongNameSigner/SigningHelper.cs b/src/Brutal.Dev.StrongNameSigner/SigningHelper.cs
index 8b5db12..99acc80 100644
--- a/src/Brutal.Dev.StrongNameSigner/SigningHelper.cs
+++ b/src/Brutal.Dev.StrongNameSigner/SigningHelper.cs
@@ -203,7 +203,7 @@ public static void SignAssemblies(IEnumerable<InputOutputFilePair> assemblyInput
 
       // File locking issues in Mono.Cecil are a real pain in the ass so let's create a working directory of files to process, then copy them back when we're done.
       var tempFilePathToInputOutputFilePairMap = new Dictionary<string, InputOutputFilePair>();
-      var tempPath = Path.Combine(Path.GetTempPath(), "StrongNameSigner");
+      var tempPath = Path.Combine(Path.GetTempPath(), "StrongNameSigner-" + Guid.NewGuid().ToString());
       Directory.CreateDirectory(tempPath);
 
       foreach (var inputOutpuFilePair in assemblyInputOutputPaths)