diff --git a/aspnetcore/fundamentals/servers/kestrel/http3.md b/aspnetcore/fundamentals/servers/kestrel/http3.md
index 02ab405e74..4a5382a93e 100644
--- a/aspnetcore/fundamentals/servers/kestrel/http3.md
+++ b/aspnetcore/fundamentals/servers/kestrel/http3.md
@@ -39,7 +39,9 @@ The preceding Windows 11 Build versions may require the use of a [Windows Inside
 `libmsquic` is published via Microsoft's official Linux package repository at `packages.microsoft.com`. To install this package:
 
 1. Add the `packages.microsoft.com` repository. See [Linux Software Repository for Microsoft Products](/windows-server/administration/linux-package-repository-for-microsoft-software) for instructions.
-2. Install the `libmsquic` package using the distro's package manager. For example, `apt install libmsquic` on Ubuntu.
+2. Install the `libmsquic` package using the distro's package manager. For example, `apt install libmsquic=1.9*` on Ubuntu.
+
+**Note:** .NET 6 is only compatible with the 1.9.x versions of libmsquic. Libmsquic 2.x is not compatible due to breaking changes. Libmsquic receives updates to 1.9.x when needed to incorporate security fixes.  
 
 ### macOS