diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 7124df35356d91ea549b0af9c136c150ddb4ef6d..4222ace1f9836e92827612e6ff9c24b4830638ac 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -66,25 +66,25 @@
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>ea8f37e8982dc22022b33c5e151081ad04d923a6</Sha>
     </Dependency>
-    <Dependency Name="optimization.windows_nt-x64.IBC.CoreFx" Version="99.99.99-master-20190716.1">
+    <Dependency Name="optimization.windows_nt-x64.IBC.CoreFx" Version="99.99.99-master-20200806.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>d0bb63d2ec7060714e63ee4082fac48f2e57f3e2</Sha>
+      <Sha>f69d7fc09c4fdb9e9427741b9a176e867dab577f</Sha>
     </Dependency>
-    <Dependency Name="optimization.linux-x64.IBC.CoreFx" Version="99.99.99-master-20190716.1">
+    <Dependency Name="optimization.linux-x64.IBC.CoreFx" Version="99.99.99-master-20200806.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>d0bb63d2ec7060714e63ee4082fac48f2e57f3e2</Sha>
+      <Sha>f69d7fc09c4fdb9e9427741b9a176e867dab577f</Sha>
     </Dependency>
-    <Dependency Name="optimization.windows_nt-x64.IBC.CoreCLR" Version="99.99.99-master-20190716.1">
+    <Dependency Name="optimization.windows_nt-x64.IBC.CoreCLR" Version="99.99.99-master-20200806.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>d0bb63d2ec7060714e63ee4082fac48f2e57f3e2</Sha>
+      <Sha>f69d7fc09c4fdb9e9427741b9a176e867dab577f</Sha>
     </Dependency>
-    <Dependency Name="optimization.linux-x64.IBC.CoreCLR" Version="99.99.99-master-20190716.1">
+    <Dependency Name="optimization.linux-x64.IBC.CoreCLR" Version="99.99.99-master-20200806.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>d0bb63d2ec7060714e63ee4082fac48f2e57f3e2</Sha>
+      <Sha>f69d7fc09c4fdb9e9427741b9a176e867dab577f</Sha>
     </Dependency>
-    <Dependency Name="optimization.PGO.CoreCLR" Version="99.99.99-master-20190716.1">
+    <Dependency Name="optimization.PGO.CoreCLR" Version="99.99.99-master-20200806.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>d0bb63d2ec7060714e63ee4082fac48f2e57f3e2</Sha>
+      <Sha>f69d7fc09c4fdb9e9427741b9a176e867dab577f</Sha>
     </Dependency>
     <Dependency Name="Microsoft.NET.Test.Sdk" Version="16.8.0-preview-20200730-03">
       <Uri>https://github.com/microsoft/vstest</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index ca5a1fa20c2c81f1e7cceacc4aa88c4b3b5ad6ac..69746786f8122742e784d61ac805b09aa432f8c3 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -111,11 +111,11 @@
     <NETStandardLibraryVersion>2.2.0-prerelease.19564.1</NETStandardLibraryVersion>
     <NetStandardLibrary20Version>2.0.3</NetStandardLibrary20Version>
     <!-- dotnet-optimization dependencies -->
-    <optimizationwindows_ntx64IBCCoreFxVersion>99.99.99-master-20200228.3</optimizationwindows_ntx64IBCCoreFxVersion>
-    <optimizationlinuxx64IBCCoreFxVersion>99.99.99-master-20200228.3</optimizationlinuxx64IBCCoreFxVersion>
-    <optimizationwindows_ntx64IBCCoreCLRVersion>99.99.99-master-20200228.3</optimizationwindows_ntx64IBCCoreCLRVersion>
-    <optimizationlinuxx64IBCCoreCLRVersion>99.99.99-master-20200228.3</optimizationlinuxx64IBCCoreCLRVersion>
-    <optimizationPGOCoreCLRVersion>99.99.99-master-20200228.3</optimizationPGOCoreCLRVersion>
+    <optimizationwindows_ntx64IBCCoreFxVersion>99.99.99-master-20200806.6</optimizationwindows_ntx64IBCCoreFxVersion>
+    <optimizationlinuxx64IBCCoreFxVersion>99.99.99-master-20200806.6</optimizationlinuxx64IBCCoreFxVersion>
+    <optimizationwindows_ntx64IBCCoreCLRVersion>99.99.99-master-20200806.6</optimizationwindows_ntx64IBCCoreCLRVersion>
+    <optimizationlinuxx64IBCCoreCLRVersion>99.99.99-master-20200806.6</optimizationlinuxx64IBCCoreCLRVersion>
+    <optimizationPGOCoreCLRVersion>99.99.99-master-20200806.6</optimizationPGOCoreCLRVersion>
     <!-- Not auto-updated. -->
     <MicrosoftDiaSymReaderNativeVersion>1.7.0</MicrosoftDiaSymReaderNativeVersion>
     <SystemCommandLineVersion>2.0.0-beta1.20253.1</SystemCommandLineVersion>