diff --git a/src/Volo.ExtensionMethods/Check.cs b/src/Volo.ExtensionMethods/Check.cs
index 7920639c33..b7882f6e87 100644
--- a/src/Volo.ExtensionMethods/Check.cs
+++ b/src/Volo.ExtensionMethods/Check.cs
@@ -4,6 +4,8 @@ using JetBrains.Annotations;
 
 namespace Volo
 {
+    //TODO: This code should not be here and this library should not depend on JetBrains.Annotations.
+
     [DebuggerStepThrough]
     public static class Check
     {
diff --git a/src/Volo.ExtensionMethods/project.json b/src/Volo.ExtensionMethods/project.json
index 99044409f9..65a8e28a9d 100644
--- a/src/Volo.ExtensionMethods/project.json
+++ b/src/Volo.ExtensionMethods/project.json
@@ -1,9 +1,9 @@
-{
+{
   "version": "1.0.0-*",
 
   "dependencies": {
-    "NETStandard.Library": "1.6.1",
-    "Volo.CodeAnnotations": "1.0.0-*"
+    "JetBrains.Annotations": "10.2.1",
+    "NETStandard.Library": "1.6.1"
   },
 
   "frameworks": {