diff --git a/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs b/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs
index 98371e9f13..4a191a365f 100644
--- a/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs
+++ b/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs
@@ -42,7 +42,7 @@ namespace Microsoft.Extensions.DependencyInjection
                 });
         }
 
-        [Fact] // see: https://github.com/aspnet/Extensions/issues/639
+        [Fact] // see: https://github.com/dotnet/extensions/issues/639
         public void AddHealthChecks_RegistersPublisherService_WhenOtherHostedServicesRegistered()
         {
             // Arrange
diff --git a/src/JSInterop/Microsoft.JSInterop.JS/src/package.json b/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
index 8f04908e78..37273c492f 100644
--- a/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
+++ b/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
@@ -12,14 +12,14 @@
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/aspnet/Extensions.git"
+    "url": "git+https://github.com/dotnet/extensions.git"
   },
   "author": "Microsoft",
   "license": "Apache-2.0",
   "bugs": {
-    "url": "https://github.com/aspnet/Extensions/issues"
+    "url": "https://github.com/dotnet/extensions/issues"
   },
-  "homepage": "https://github.com/aspnet/Extensions/tree/master/src/JSInterop#readme",
+  "homepage": "https://github.com/dotnet/extensions/tree/master/src/JSInterop#readme",
   "files": [
     "dist/**"
   ],
diff --git a/src/JSInterop/Microsoft.JSInterop/test/Infrastructure/DotNetDispatcherTest.cs b/src/JSInterop/Microsoft.JSInterop/test/Infrastructure/DotNetDispatcherTest.cs
index c85565d5f2..1f482b2680 100644
--- a/src/JSInterop/Microsoft.JSInterop/test/Infrastructure/DotNetDispatcherTest.cs
+++ b/src/JSInterop/Microsoft.JSInterop/test/Infrastructure/DotNetDispatcherTest.cs
@@ -298,7 +298,7 @@ namespace Microsoft.JSInterop.Infrastructure
             Assert.Equal(expected, ex.Message);
         }
 
-        [Fact(Skip = "https://github.com/aspnet/AspNetCore/issues/12357")]
+        [Fact(Skip = "https://github.com/dotnet/aspnetcore/issues/12357")]
         public void EndInvoke_AfterCancel()
         {
             // Arrange
@@ -527,7 +527,7 @@ namespace Microsoft.JSInterop.Infrastructure
             Assert.False(jsRuntime.LastCompletionResult.Success); // Fails
 
             // Make sure the method that threw the exception shows up in the call stack
-            // https://github.com/aspnet/AspNetCore/issues/8612
+            // https://github.com/dotnet/aspnetcore/issues/8612
             Assert.Contains(nameof(ThrowingClass.ThrowingMethod), jsRuntime.LastCompletionResult.Exception.ToString());
         }
 
@@ -549,7 +549,7 @@ namespace Microsoft.JSInterop.Infrastructure
             Assert.False(jsRuntime.LastCompletionResult.Success); // Fails
 
             // Make sure the method that threw the exception shows up in the call stack
-            // https://github.com/aspnet/AspNetCore/issues/8612
+            // https://github.com/dotnet/aspnetcore/issues/8612
             Assert.Contains(nameof(ThrowingClass.AsyncThrowingMethod), jsRuntime.LastCompletionResult.Exception.ToString());
         }
 
diff --git a/src/Localization/README.md b/src/Localization/README.md
index dc6894b6e0..503620b3c6 100644
--- a/src/Localization/README.md
+++ b/src/Localization/README.md
@@ -3,4 +3,4 @@ Localization
 
 These projects provide abstractions for localizing resources in .NET applications.
 
-The ASP.NET Core implementation of localization can be found in https://github.com/aspnet/AspNetCore/tree/master/src/Middleware/Localization.
+The ASP.NET Core implementation of localization can be found in https://github.com/dotnet/aspnetcore/tree/master/src/Middleware/Localization.
diff --git a/src/Testing/ref/Microsoft.AspNetCore.Testing.net46.cs b/src/Testing/ref/Microsoft.AspNetCore.Testing.net46.cs
index e737371a8c..17a922a6c7 100644
--- a/src/Testing/ref/Microsoft.AspNetCore.Testing.net46.cs
+++ b/src/Testing/ref/Microsoft.AspNetCore.Testing.net46.cs
@@ -313,7 +313,7 @@ namespace Microsoft.AspNetCore.Testing
         public bool PreserveExistingLogsInOutput { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } }
         public string TargetFramework { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } }
     }
-    [System.ObsoleteAttribute("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/aspnet/Extensions/issues/1697 for details.")]
+    [System.ObsoleteAttribute("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/dotnet/extensions/issues/1697 for details.")]
     public partial class TestPathUtilities
     {
         public TestPathUtilities() { }
diff --git a/src/Testing/ref/Microsoft.AspNetCore.Testing.netstandard2.0.cs b/src/Testing/ref/Microsoft.AspNetCore.Testing.netstandard2.0.cs
index e737371a8c..17a922a6c7 100644
--- a/src/Testing/ref/Microsoft.AspNetCore.Testing.netstandard2.0.cs
+++ b/src/Testing/ref/Microsoft.AspNetCore.Testing.netstandard2.0.cs
@@ -313,7 +313,7 @@ namespace Microsoft.AspNetCore.Testing
         public bool PreserveExistingLogsInOutput { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } }
         public string TargetFramework { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } }
     }
-    [System.ObsoleteAttribute("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/aspnet/Extensions/issues/1697 for details.")]
+    [System.ObsoleteAttribute("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/dotnet/extensions/issues/1697 for details.")]
     public partial class TestPathUtilities
     {
         public TestPathUtilities() { }
diff --git a/src/Testing/src/TestPathUtilities.cs b/src/Testing/src/TestPathUtilities.cs
index a5d83feeff..6d4449ca92 100644
--- a/src/Testing/src/TestPathUtilities.cs
+++ b/src/Testing/src/TestPathUtilities.cs
@@ -6,7 +6,7 @@ using System.IO;
 
 namespace Microsoft.AspNetCore.Testing
 {
-    [Obsolete("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/aspnet/Extensions/issues/1697 for details.")]
+    [Obsolete("This API is obsolete and the pattern its usage encouraged should not be used anymore. See https://github.com/dotnet/extensions/issues/1697 for details.")]
     public class TestPathUtilities
     {
         public static string GetRepoRootDirectory()
diff --git a/src/Testing/test/TestPathUtilitiesTest.cs b/src/Testing/test/TestPathUtilitiesTest.cs
index 4a6a74ae9c..024f476f07 100644
--- a/src/Testing/test/TestPathUtilitiesTest.cs
+++ b/src/Testing/test/TestPathUtilitiesTest.cs
@@ -9,7 +9,7 @@ namespace Microsoft.AspNetCore.Testing
 {
     public class TestPathUtilitiesTest
     {
-        // Entire test pending removal - see https://github.com/aspnet/Extensions/issues/1697
+        // Entire test pending removal - see https://github.com/dotnet/extensions/issues/1697
 #pragma warning disable 0618
 
         [Fact]