diff --git a/src/IKVM.MSBuild.Tasks/IkvmTaskException.cs b/src/IKVM.MSBuild.Tasks/IkvmTaskException.cs
index 8643afbeb7..e677559562 100644
--- a/src/IKVM.MSBuild.Tasks/IkvmTaskException.cs
+++ b/src/IKVM.MSBuild.Tasks/IkvmTaskException.cs
@@ -31,6 +31,18 @@ public IkvmTaskException(string message, Exception innerException) :
 
         }
 
+        /// <summary>
+        /// Initializes a new instance.
+        /// </summary>
+        /// <param name="info"></param>
+        /// <param name="context"></param>
+        public IkvmTaskException(SerializationInfo info, StreamingContext context) :
+            base(info, context)
+        {
+
+        }
+
+
     }
 
 }
diff --git a/src/IKVM.MSBuild.Tasks/IkvmTaskMessageException.cs b/src/IKVM.MSBuild.Tasks/IkvmTaskMessageException.cs
index 886da2df43..918c456d3c 100644
--- a/src/IKVM.MSBuild.Tasks/IkvmTaskMessageException.cs
+++ b/src/IKVM.MSBuild.Tasks/IkvmTaskMessageException.cs
@@ -42,6 +42,17 @@ public IkvmTaskMessageException(Exception innerException, string messageResource
             this.messageArgs = messageArgs ?? throw new ArgumentNullException(nameof(messageArgs));
         }
 
+        /// <summary>
+        /// Initializes a new instance.
+        /// </summary>
+        /// <param name="info"></param>
+        /// <param name="context"></param>
+        public IkvmTaskMessageException(SerializationInfo info, StreamingContext context) :
+            base(info, context)
+        {
+
+        }
+
         /// <summary>
         /// Gets the resource name of the message.
         /// </summary>