diff --git a/pkgs/development/compilers/dotnet/default.nix b/pkgs/development/compilers/dotnet/default.nix
index 118477b6b65d..1d9540ccc167 100644
--- a/pkgs/development/compilers/dotnet/default.nix
+++ b/pkgs/development/compilers/dotnet/default.nix
@@ -33,4 +33,8 @@ in rec {
     version = "3.0.100";
     sha512 = "766da31f9a0bcfbf0f12c91ea68354eb509ac2111879d55b656f19299c6ea1c005d31460dac7c2a4ef82b3edfea30232c82ba301fb52c0ff268d3e3a1b73d8f7";
   };
+  sdk_3_1 = buildNetCoreSdk {
+    version = "3.1.100";
+    sha512 = "0hvshwsgbm6v5hc1plzdzx8bwsdna2167fnfhxpysqs5mz7crsa4f13m4cxhrbn64lasqz2007nhdrlpgaqvgll6q8736h884aaw5sj";
+  };
 }