diff --git a/vendor/fortran-unix b/vendor/fortran-unix
index 976927b..666418d 160000
--- a/vendor/fortran-unix
+++ b/vendor/fortran-unix
@@ -1 +1 @@
-Subproject commit 976927bbd7038f1239da51628c1383367cdf390a
+Subproject commit 666418df9825634144f3d4f004e25585712aaa52