diff --git a/pkgs/applications/emulators/basiliskii/default.nix b/pkgs/applications/emulators/basiliskii/default.nix
index f32abac9a6b..8a58dd24555 100644
--- a/pkgs/applications/emulators/basiliskii/default.nix
+++ b/pkgs/applications/emulators/basiliskii/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, autoconf, automake, pkg-config, SDL2, gtk2 }:
+{ stdenv, lib, fetchFromGitHub, autoconf, automake, pkg-config, SDL2, gtk2, mpfr }:
 stdenv.mkDerivation {
   pname = "basiliskii";
   version = "unstable-2022-09-30";
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   sourceRoot = "source/BasiliskII/src/Unix";
   patches = [ ./remove-redhat-6-workaround-for-scsi-sg.h.patch ];
   nativeBuildInputs = [ autoconf automake pkg-config ];
-  buildInputs = [ SDL2 gtk2 ];
+  buildInputs = [ SDL2 gtk2 mpfr ];
   preConfigure = ''
     NO_CONFIGURE=1 ./autogen.sh
   '';