diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index add71178d854ae..b200b977ed9700 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="9.0.0-rtm.26469.2">
+    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="9.0.0-rtm.26509.1">
       <Uri>https://github.com/dotnet/icu</Uri>
-      <Sha>f6dff8344dc891bc3e0e6b8ec913cbf157bdfa9f</Sha>
+      <Sha>4b5609920f97434d2100323e5dc47ad9c9f58dac</Sha>
     </Dependency>
     <Dependency Name="System.Net.MsQuic.Transport" Version="9.0.0-alpha.1.24167.3">
       <Uri>https://github.com/dotnet/msquic</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index cde3b12e2e9417..4749aa1166d8cd 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -226,7 +226,7 @@
     <!-- ILCompiler -->
     <MicrosoftDotNetILCompilerVersion>9.0.0-rtm.24511.16</MicrosoftDotNetILCompilerVersion>
     <!-- ICU -->
-    <MicrosoftNETCoreRuntimeICUTransportVersion>9.0.0-rtm.26469.2</MicrosoftNETCoreRuntimeICUTransportVersion>
+    <MicrosoftNETCoreRuntimeICUTransportVersion>9.0.0-rtm.26509.1</MicrosoftNETCoreRuntimeICUTransportVersion>
     <!-- MsQuic -->
     <MicrosoftNativeQuicMsQuicSchannelVersion>2.5.10</MicrosoftNativeQuicMsQuicSchannelVersion>
     <!-- Mono LLVM -->