diff --git a/src/Microsoft.AspNet.Abstractions/project.json b/src/Microsoft.AspNet.Abstractions/project.json
index 669ddaed1c..e0db39cefa 100644
--- a/src/Microsoft.AspNet.Abstractions/project.json
+++ b/src/Microsoft.AspNet.Abstractions/project.json
@@ -11,8 +11,8 @@
         "System.Linq": "4.0.0.0",
         "System.Runtime": "4.0.20.0",
         "System.Runtime.Extensions": "4.0.10.0",
-        "System.Runtime.InteropServices": "4.0.10.0",
-        "System.Threading.Tasks": "4.0.0.0"
+        "System.Runtime.InteropServices": "4.0.20.0",
+        "System.Threading.Tasks": "4.0.10.0"
       }
     }
   }
diff --git a/src/Microsoft.AspNet.FeatureModel/project.json b/src/Microsoft.AspNet.FeatureModel/project.json
index 33f8ba15f7..7d3092564d 100644
--- a/src/Microsoft.AspNet.FeatureModel/project.json
+++ b/src/Microsoft.AspNet.FeatureModel/project.json
@@ -10,7 +10,7 @@
         "System.Reflection": "4.0.10.0",
         "System.Reflection.Compatibility": "4.0.0.0",
         "System.Runtime": "4.0.20.0",
-        "System.Runtime.InteropServices": "4.0.10.0",
+        "System.Runtime.InteropServices": "4.0.20.0",
         "System.Threading": "4.0.0.0"
       }
     }
diff --git a/src/Microsoft.AspNet.HttpFeature/project.json b/src/Microsoft.AspNet.HttpFeature/project.json
index fe3cbc04bc..35f7cd2425 100644
--- a/src/Microsoft.AspNet.HttpFeature/project.json
+++ b/src/Microsoft.AspNet.HttpFeature/project.json
@@ -6,10 +6,10 @@
       "dependencies": {
         "System.IO": "4.0.0.0",
         "System.Runtime": "4.0.20.0",
-        "System.Runtime.InteropServices": "4.0.10.0",
+        "System.Runtime.InteropServices": "4.0.20.0",
         "System.Security.Claims": "0.1-alpha-*",
         "System.Security.Principal": "4.0.0.0",
-        "System.Threading.Tasks": "4.0.0.0"
+        "System.Threading.Tasks": "4.0.10.0"
       }
     }
   }
diff --git a/src/Microsoft.AspNet.PipelineCore/project.json b/src/Microsoft.AspNet.PipelineCore/project.json
index 82b021a735..58a9d9ef86 100644
--- a/src/Microsoft.AspNet.PipelineCore/project.json
+++ b/src/Microsoft.AspNet.PipelineCore/project.json
@@ -1,3 +1,4 @@
+
 {
   "version": "0.1-alpha-*",
   "dependencies": {
@@ -18,9 +19,9 @@
         "System.Linq": "4.0.0.0",
         "System.Runtime": "4.0.20.0",
         "System.Runtime.Extensions": "4.0.10.0",
-        "System.Runtime.InteropServices": "4.0.10.0",
-        "System.Text.Encoding": "4.0.10.0",
-        "System.Threading.Tasks": "4.0.0.0"
+        "System.Runtime.InteropServices": "4.0.20.0",
+        "System.Text.Encoding": "4.0.20.0",
+        "System.Threading.Tasks": "4.0.10.0"
       }
     }
   }