diff --git a/build/Defaults/app.config b/build/Defaults/app.config
index 160a172af9be2fe34c92481a8d0747701e3af076..60d330061933a350ecb667ddca5b0199504c85cd 100644
--- a/build/Defaults/app.config
+++ b/build/Defaults/app.config
@@ -19,7 +19,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/build/bootstrap/VBCSCompiler.exe.config b/build/bootstrap/VBCSCompiler.exe.config
index 459729af9f86097b7e15133cd95fc66760809429..aca7d21eb49c146f990399baf742514fe10f1b4d 100644
--- a/build/bootstrap/VBCSCompiler.exe.config
+++ b/build/bootstrap/VBCSCompiler.exe.config
@@ -18,11 +18,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/build/bootstrap/csc.exe.config b/build/bootstrap/csc.exe.config
index 9be715f9092c425c97b09109c19e3baf8dee61b6..c7b83e6ff83a57d55c39f5f722ce98255859c38b 100644
--- a/build/bootstrap/csc.exe.config
+++ b/build/bootstrap/csc.exe.config
@@ -18,11 +18,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/build/bootstrap/vbc.exe.config b/build/bootstrap/vbc.exe.config
index d6f37ddd737ea43b945df3e1129d45ad43419cec..8ffdbd404a472c58c1ee54697fd4df3db3984f24 100644
--- a/build/bootstrap/vbc.exe.config
+++ b/build/bootstrap/vbc.exe.config
@@ -18,11 +18,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/Compilers/CSharp/csc/csc.exe.config b/src/Compilers/CSharp/csc/csc.exe.config
index da6ab72526571a3dd89830aaa38691c1462c9258..ec3970f8baa00f9a3322190f0c1fd61bcbd16469 100644
--- a/src/Compilers/CSharp/csc/csc.exe.config
+++ b/src/Compilers/CSharp/csc/csc.exe.config
@@ -20,11 +20,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/Compilers/Server/VBCSCompiler/app.config b/src/Compilers/Server/VBCSCompiler/app.config
index bdbdf7e893bb86caa31047da97ab2ee90468edaa..1a7a5252dc9914324c38ec8ae13415e940699b9e 100644
--- a/src/Compilers/Server/VBCSCompiler/app.config
+++ b/src/Compilers/Server/VBCSCompiler/app.config
@@ -20,11 +20,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
@@ -33,4 +33,4 @@
          Set to -1 to never shut down the server. -->
     <add key="keepalive" value="600"/>
   </appSettings>
-</configuration>
\ No newline at end of file
+</configuration>
diff --git a/src/Compilers/VisualBasic/vbc/vbc.exe.config b/src/Compilers/VisualBasic/vbc/vbc.exe.config
index da6ab72526571a3dd89830aaa38691c1462c9258..ec3970f8baa00f9a3322190f0c1fd61bcbd16469 100644
--- a/src/Compilers/VisualBasic/vbc/vbc.exe.config
+++ b/src/Compilers/VisualBasic/vbc/vbc.exe.config
@@ -20,11 +20,11 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.1.0.0-1.1.65535.65535" newVersion="1.1.37.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
-        <bindingRedirect oldVersion="1.0.0.0-1.1.65535.65535" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/EditorFeatures/CSharpTest/app.config b/src/EditorFeatures/CSharpTest/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/EditorFeatures/CSharpTest/app.config
+++ b/src/EditorFeatures/CSharpTest/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/EditorFeatures/Test/app.config b/src/EditorFeatures/Test/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/EditorFeatures/Test/app.config
+++ b/src/EditorFeatures/Test/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/EditorFeatures/Test2/app.config b/src/EditorFeatures/Test2/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/EditorFeatures/Test2/app.config
+++ b/src/EditorFeatures/Test2/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/EditorFeatures/VisualBasicTest/app.config b/src/EditorFeatures/VisualBasicTest/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/EditorFeatures/VisualBasicTest/app.config
+++ b/src/EditorFeatures/VisualBasicTest/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/VisualStudio/CSharp/Test/app.config b/src/VisualStudio/CSharp/Test/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/VisualStudio/CSharp/Test/app.config
+++ b/src/VisualStudio/CSharp/Test/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
diff --git a/src/VisualStudio/Core/Test/app.config b/src/VisualStudio/Core/Test/app.config
index 4bf71e201e0b1885ff607ff5b6a7fce721060214..7de1ee10bb46ca6cd080c7665efbf41bf2a02443 100644
--- a/src/VisualStudio/Core/Test/app.config
+++ b/src/VisualStudio/Core/Test/app.config
@@ -17,7 +17,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
-        <bindingRedirect oldVersion="1.0.0.0-1.65535.65535.65535" newVersion="1.1.37.0"/>
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
       </dependentAssembly>
     </assemblyBinding>
   </runtime>