diff --git a/samples/LocalizationSample/Startup.cs b/samples/LocalizationSample/Startup.cs
index 218fceff51..c906275082 100644
--- a/samples/LocalizationSample/Startup.cs
+++ b/samples/LocalizationSample/Startup.cs
@@ -33,7 +33,7 @@ namespace LocalizationSample
                 new CultureInfo("zh"),
                 new CultureInfo("zh-CN")
             };
-#if !DNXCORE50
+#if !NETSTANDARDAPP1_5
             supportedCultures.Add(new CultureInfo("zh-CHT"));
 #endif
             var options = new RequestLocalizationOptions {
diff --git a/samples/LocalizationSample/project.json b/samples/LocalizationSample/project.json
index 79a00e697f..0416717f98 100644
--- a/samples/LocalizationSample/project.json
+++ b/samples/LocalizationSample/project.json
@@ -1,6 +1,5 @@
 {
   "version": "1.0.0-*",
-
   "dependencies": {
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Localization": "1.0.0-*",
@@ -8,24 +7,23 @@
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
-
   "compilationOptions": {
     "emitEntryPoint": true
   },
-
   "commands": {
     "web": "LocalizationSample"
   },
-
   "frameworks": {
-    "dnx451": { },
-    "dnxcore50": { 
+    "dnx451": {},
+    "netstandardapp1.5": {
       "dependencies": {
         "NETStandard.Library": "1.0.0-*"
-      }
+      },
+      "imports": [
+        "dnxcore50"
+      ]
     }
   },
-
   "publishExclude": [
     "node_modules",
     "bower_components",
@@ -38,4 +36,4 @@
     "node_modules",
     "bower_components"
   ]
-}
+}
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Localization/project.json b/src/Microsoft.AspNetCore.Localization/project.json
index 1b51931cba..1292b90f0e 100644
--- a/src/Microsoft.AspNetCore.Localization/project.json
+++ b/src/Microsoft.AspNetCore.Localization/project.json
@@ -8,7 +8,9 @@
   "compilationOptions": {
     "warningsAsErrors": true,
     "keyFile": "../../tools/Key.snk",
-    "nowarn": [ "CS1591" ],
+    "nowarn": [
+      "CS1591"
+    ],
     "xmlDoc": true
   },
   "dependencies": {
@@ -19,6 +21,10 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {}
+    "netstandard1.3": {
+      "imports": [
+        "dotnet5.4"
+      ]
+    }
   }
-}
+}
\ No newline at end of file
diff --git a/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json b/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
index 4983ebf4d5..0819ad2fdd 100644
--- a/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
+++ b/src/Microsoft.Extensions.Globalization.CultureInfoCache/project.json
@@ -8,16 +8,21 @@
   "compilationOptions": {
     "warningsAsErrors": true,
     "keyFile": "../../tools/Key.snk",
-    "nowarn": [ "CS1591" ],
+    "nowarn": [
+      "CS1591"
+    ],
     "xmlDoc": true
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {
+    "netstandard1.3": {
       "dependencies": {
         "System.Collections.Concurrent": "4.0.12-*",
         "System.Linq": "4.1.0-*"
-      }
+      },
+      "imports": [
+        "dotnet5.4"
+      ]
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/Microsoft.Extensions.Localization.Abstractions/project.json b/src/Microsoft.Extensions.Localization.Abstractions/project.json
index 319ad27c82..f2c11f9c49 100644
--- a/src/Microsoft.Extensions.Localization.Abstractions/project.json
+++ b/src/Microsoft.Extensions.Localization.Abstractions/project.json
@@ -8,16 +8,21 @@
   "compilationOptions": {
     "warningsAsErrors": true,
     "keyFile": "../../tools/Key.snk",
-    "nowarn": [ "CS1591" ],
+    "nowarn": [
+      "CS1591"
+    ],
     "xmlDoc": true
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {
+    "netstandard1.3": {
       "dependencies": {
         "Microsoft.CSharp": "4.0.1-*",
         "System.Globalization": "4.0.11-*"
-      }
+      },
+      "imports": [
+        "dotnet5.4"
+      ]
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/Microsoft.Extensions.Localization/project.json b/src/Microsoft.Extensions.Localization/project.json
index 02ad175733..7b15f7a4c7 100644
--- a/src/Microsoft.Extensions.Localization/project.json
+++ b/src/Microsoft.Extensions.Localization/project.json
@@ -8,7 +8,9 @@
   "compilationOptions": {
     "warningsAsErrors": true,
     "keyFile": "../../tools/Key.snk",
-    "nowarn": [ "CS1591" ],
+    "nowarn": [
+      "CS1591"
+    ],
     "xmlDoc": true
   },
   "dependencies": {
@@ -19,11 +21,14 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {
+    "netstandard1.3": {
       "dependencies": {
         "System.Collections.Concurrent": "4.0.12-*",
         "System.Resources.Reader": "4.0.0-*"
-      }
+      },
+      "imports": [
+        "dotnet5.4"
+      ]
     }
   }
-}
+}
\ No newline at end of file
diff --git a/test/LocalizationWebsite/project.json b/test/LocalizationWebsite/project.json
index 1439057e00..f4aef97539 100644
--- a/test/LocalizationWebsite/project.json
+++ b/test/LocalizationWebsite/project.json
@@ -12,11 +12,14 @@
     "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "frameworks": {
-    "dnxcore50": {
+    "netstandardapp1.5": {
       "dependencies": {
         "dotnet-test-xunit": "1.0.0-dev-*"
       },
-      "imports": "portable-net451+win8"
+      "imports": [
+        "dnxcore50",
+        "portable-net451+win8"
+      ]
     },
     "dnx451": {}
   },
diff --git a/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json b/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
index 01a557fc5c..c39676a3be 100644
--- a/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
+++ b/test/Microsoft.AspNetCore.Localization.FunctionalTests/project.json
@@ -10,8 +10,11 @@
     "xunit": "2.1.0"
   },
   "frameworks": {
-    "dnxcore50": {
-      "imports": "portable-net451+win8",
+    "netstandardapp1.5": {
+      "imports": [
+        "dnxcore50",
+        "portable-net451+win8"
+      ],
       "dependencies": {
         "dotnet-test-xunit": "1.0.0-dev-*"
       }
diff --git a/test/Microsoft.AspNetCore.Localization.Tests/project.json b/test/Microsoft.AspNetCore.Localization.Tests/project.json
index 54b23e3802..d24c610a53 100644
--- a/test/Microsoft.AspNetCore.Localization.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Localization.Tests/project.json
@@ -10,8 +10,11 @@
   },
   "testRunner": "xunit",
   "frameworks": {
-    "dnxcore50": {
-      "imports": "portable-net451+win8",
+    "netstandardapp1.5": {
+      "imports": [
+        "dnxcore50",
+        "portable-net451+win8"
+      ],
       "dependencies": {
         "dotnet-test-xunit": "1.0.0-dev-*"
       }
diff --git a/test/Microsoft.Extensions.Localization.Tests/project.json b/test/Microsoft.Extensions.Localization.Tests/project.json
index 36b02a3be3..8e00de1fed 100644
--- a/test/Microsoft.Extensions.Localization.Tests/project.json
+++ b/test/Microsoft.Extensions.Localization.Tests/project.json
@@ -7,11 +7,14 @@
     "Microsoft.Extensions.DependencyInjection": "1.0.0-*",
     "Microsoft.Extensions.Localization": "1.0.0-*",
     "Microsoft.NETCore.Platforms": "1.0.1-*",
-    "xunit": "2.1.0-*",
+    "xunit": "2.1.0-*"
   },
   "frameworks": {
-    "dnxcore50": {
-      "imports": "portable-net451+win8",
+    "netstandardapp1.5": {
+      "imports": [
+        "dnxcore50",
+        "portable-net451+win8"
+      ],
       "dependencies": {
         "moq.netcore": "4.4.0-beta8",
         "System.Resources.Writer": "4.0.0-*",