diff --git a/pkgs/os-specific/bsd/openbsd/pkgs/mkDerivation.nix b/pkgs/os-specific/bsd/openbsd/pkgs/mkDerivation.nix
index 6a618c88ebaf..7bc9aa4c15e9 100644
--- a/pkgs/os-specific/bsd/openbsd/pkgs/mkDerivation.nix
+++ b/pkgs/os-specific/bsd/openbsd/pkgs/mkDerivation.nix
@@ -35,6 +35,7 @@ lib.makeOverridable (
       i586 = "i386";
       i686 = "i386";
       x86_64 = "amd64";
+      riscv64 = "riscv64";
     };
 
     archMap = {
@@ -44,6 +45,7 @@ lib.makeOverridable (
       i586 = "i386";
       i686 = "i386";
       x86_64 = "amd64";
+      riscv64 = "riscv64";
     };
 
   in