diff --git a/Libraries/mpfr/4/variants b/Libraries/mpfr/4/variants
new file mode 100644
index 0000000..cec1cb1
--- /dev/null
+++ b/Libraries/mpfr/4/variants
@@ -0,0 +1 @@
+mpfr/4.0.0      stable          b:gmp/6.1.2