diff --git a/samples/SampleApp/project.json b/samples/SampleApp/project.json
index 0795191078..b4602a1370 100644
--- a/samples/SampleApp/project.json
+++ b/samples/SampleApp/project.json
@@ -9,7 +9,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/src/Microsoft.AspNetCore.Http.Abstractions/project.json b/src/Microsoft.AspNetCore.Http.Abstractions/project.json
index f67a51ea1d..620aec35eb 100644
--- a/src/Microsoft.AspNetCore.Http.Abstractions/project.json
+++ b/src/Microsoft.AspNetCore.Http.Abstractions/project.json
@@ -28,7 +28,8 @@
       "version": "1.1.0-*",
       "type": "build"
     },
-    "System.Text.Encodings.Web": "4.0.0-*"
+    "NETStandard.Library": "1.6.1-*",
+    "System.Text.Encodings.Web": "4.3.0-*"
   },
   "frameworks": {
     "net451": {
@@ -40,10 +41,8 @@
     },
     "netstandard1.3": {
       "dependencies": {
-        "System.Globalization.Extensions": "4.0.1-*",
-        "System.Linq.Expressions": "4.1.0-*",
-        "System.Reflection.TypeExtensions": "4.1.0-*",
-        "System.Runtime.InteropServices": "4.1.0-*"
+        "System.Globalization.Extensions": "4.3.0-*",
+        "System.Reflection.TypeExtensions": "4.3.0-*"
       }
     }
   }
diff --git a/src/Microsoft.AspNetCore.Http.Extensions/project.json b/src/Microsoft.AspNetCore.Http.Extensions/project.json
index d37c25798a..f639c17057 100644
--- a/src/Microsoft.AspNetCore.Http.Extensions/project.json
+++ b/src/Microsoft.AspNetCore.Http.Extensions/project.json
@@ -22,14 +22,11 @@
     "Microsoft.AspNetCore.Http.Abstractions": "1.1.0-*",
     "Microsoft.Extensions.FileProviders.Abstractions": "1.1.0-*",
     "Microsoft.Net.Http.Headers": "1.1.0-*",
-    "System.Buffers": "4.0.0-*"
+    "NETStandard.Library": "1.6.1-*",
+    "System.Buffers": "4.3.0-*"
   },
   "frameworks": {
     "net451": {},
-    "netstandard1.3": {
-      "dependencies": {
-        "System.IO.FileSystem": "4.0.1-*"
-      }
-    }
+    "netstandard1.3": {}
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Http.Features/project.json b/src/Microsoft.AspNetCore.Http.Features/project.json
index acd20aef2e..71f2f1a7a0 100644
--- a/src/Microsoft.AspNetCore.Http.Features/project.json
+++ b/src/Microsoft.AspNetCore.Http.Features/project.json
@@ -19,21 +19,17 @@
     "xmlDoc": true
   },
   "dependencies": {
-    "Microsoft.Extensions.Primitives": "1.1.0-*"
+    "Microsoft.Extensions.Primitives": "1.1.0-*",
+    "NETStandard.Library": "1.6.1-*"
   },
   "frameworks": {
     "net451": {},
     "netstandard1.3": {
       "dependencies": {
-        "System.Collections": "4.0.11-*",
-        "System.ComponentModel": "4.0.1-*",
-        "System.Linq": "4.1.0-*",
-        "System.Net.Primitives": "4.0.11-*",
-        "System.Net.WebSockets": "4.0.0-*",
-        "System.Runtime.Extensions": "4.1.0-*",
-        "System.Security.Claims": "4.0.1-*",
-        "System.Security.Cryptography.X509Certificates": "4.1.0-*",
-        "System.Security.Principal": "4.0.1-*"
+        "System.ComponentModel": "4.3.0-*",
+        "System.Net.WebSockets": "4.3.0-*",
+        "System.Security.Claims": "4.3.0-*",
+        "System.Security.Principal": "4.3.0-*"
       }
     }
   }
diff --git a/src/Microsoft.AspNetCore.Http/project.json b/src/Microsoft.AspNetCore.Http/project.json
index 792c59899d..f6004ce25c 100644
--- a/src/Microsoft.AspNetCore.Http/project.json
+++ b/src/Microsoft.AspNetCore.Http/project.json
@@ -29,14 +29,11 @@
       "type": "build"
     },
     "Microsoft.Net.Http.Headers": "1.1.0-*",
-    "System.Buffers": "4.0.0-*"
+    "NETStandard.Library": "1.6.1-*",
+    "System.Buffers": "4.3.0-*"
   },
   "frameworks": {
     "net451": {},
-    "netstandard1.3": {
-      "dependencies": {
-        "System.Threading": "4.0.11-*"
-      }
-    }
+    "netstandard1.3": {}
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Owin/project.json b/src/Microsoft.AspNetCore.Owin/project.json
index 66160588c2..8f7b98d876 100644
--- a/src/Microsoft.AspNetCore.Owin/project.json
+++ b/src/Microsoft.AspNetCore.Owin/project.json
@@ -25,7 +25,8 @@
     "Microsoft.Extensions.TaskCache.Sources": {
       "version": "1.1.0-*",
       "type": "build"
-    }
+    },
+    "NETStandard.Library": "1.6.1-*"
   },
   "frameworks": {
     "net451": {},
diff --git a/src/Microsoft.AspNetCore.WebUtilities/project.json b/src/Microsoft.AspNetCore.WebUtilities/project.json
index 49d03defca..bac509bd61 100644
--- a/src/Microsoft.AspNetCore.WebUtilities/project.json
+++ b/src/Microsoft.AspNetCore.WebUtilities/project.json
@@ -11,7 +11,9 @@
     ]
   },
   "buildOptions": {
-    "define": [ "WebEncoders_In_WebUtilities" ],
+    "define": [
+      "WebEncoders_In_WebUtilities"
+    ],
     "keyFile": "../../tools/Key.snk",
     "nowarn": [
       "CS1591"
@@ -26,8 +28,9 @@
       "version": "1.1.0-*"
     },
     "Microsoft.Net.Http.Headers": "1.1.0-*",
-    "System.Buffers": "4.0.0-*",
-    "System.Text.Encodings.Web": "4.0.0-*"
+    "NETStandard.Library": "1.6.1-*",
+    "System.Buffers": "4.3.0-*",
+    "System.Text.Encodings.Web": "4.3.0-*"
   },
   "frameworks": {
     "net451": {
@@ -37,12 +40,6 @@
         }
       }
     },
-    "netstandard1.3": {
-      "dependencies": {
-        "System.Collections": "4.0.11-*",
-        "System.IO": "4.1.0-*",
-        "System.IO.FileSystem": "4.0.1-*"
-      }
-    }
+    "netstandard1.3": {}
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.Net.Http.Headers/project.json b/src/Microsoft.Net.Http.Headers/project.json
index af1a98f866..4f3a4ed848 100644
--- a/src/Microsoft.Net.Http.Headers/project.json
+++ b/src/Microsoft.Net.Http.Headers/project.json
@@ -18,18 +18,14 @@
     ],
     "xmlDoc": true
   },
-  "dependencies": {},
+  "dependencies": {
+    "NETStandard.Library": "1.6.1-*"
+  },
   "frameworks": {
     "netstandard1.1": {
       "dependencies": {
-        "System.Collections": "4.0.11-*",
-        "System.Diagnostics.Contracts": "4.0.1-*",
-        "System.Globalization": "4.0.11-*",
-        "System.Linq": "4.1.0-*",
-        "System.Resources.ResourceManager": "4.0.1-*",
-        "System.Runtime.Extensions": "4.1.0-*",
-        "System.Text.Encoding": "4.0.11-*",
-        "System.Buffers": "4.0.0-*"
+        "System.Buffers": "4.3.0-*",
+        "System.Diagnostics.Contracts": "4.3.0-*"
       }
     }
   }
diff --git a/test/Microsoft.AspNetCore.Http.Abstractions.Tests/project.json b/test/Microsoft.AspNetCore.Http.Abstractions.Tests/project.json
index 962a99e2fb..84754903d3 100644
--- a/test/Microsoft.AspNetCore.Http.Abstractions.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Http.Abstractions.Tests/project.json
@@ -13,7 +13,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/test/Microsoft.AspNetCore.Http.Extensions.Tests/project.json b/test/Microsoft.AspNetCore.Http.Extensions.Tests/project.json
index e238763f98..aee78aef75 100644
--- a/test/Microsoft.AspNetCore.Http.Extensions.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Http.Extensions.Tests/project.json
@@ -10,7 +10,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/test/Microsoft.AspNetCore.Http.Features.Tests/project.json b/test/Microsoft.AspNetCore.Http.Features.Tests/project.json
index 01ae630ab4..f534b6675f 100644
--- a/test/Microsoft.AspNetCore.Http.Features.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Http.Features.Tests/project.json
@@ -8,7 +8,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/test/Microsoft.AspNetCore.Http.Tests/project.json b/test/Microsoft.AspNetCore.Http.Tests/project.json
index fb5875eb55..53031a17f8 100644
--- a/test/Microsoft.AspNetCore.Http.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Http.Tests/project.json
@@ -8,7 +8,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/test/Microsoft.AspNetCore.Owin.Tests/project.json b/test/Microsoft.AspNetCore.Owin.Tests/project.json
index 473d83b60e..de84445e0b 100644
--- a/test/Microsoft.AspNetCore.Owin.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Owin.Tests/project.json
@@ -10,7 +10,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }
diff --git a/test/Microsoft.AspNetCore.WebUtilities.Tests/project.json b/test/Microsoft.AspNetCore.WebUtilities.Tests/project.json
index 5735268ac3..8cfc45ec36 100644
--- a/test/Microsoft.AspNetCore.WebUtilities.Tests/project.json
+++ b/test/Microsoft.AspNetCore.WebUtilities.Tests/project.json
@@ -12,10 +12,9 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
-        },
-        "System.Text.Encoding.Extensions": "4.0.11-*"
+        }
       }
     },
     "net451": {}
diff --git a/test/Microsoft.Net.Http.Headers.Tests/project.json b/test/Microsoft.Net.Http.Headers.Tests/project.json
index 293b526faf..3d2129131d 100644
--- a/test/Microsoft.Net.Http.Headers.Tests/project.json
+++ b/test/Microsoft.Net.Http.Headers.Tests/project.json
@@ -9,7 +9,7 @@
     "netcoreapp1.0": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0-*",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }