diff --git a/eigen b/eigen
index 21ae2afd4e..3147391d94 160000
--- a/eigen
+++ b/eigen
@@ -1 +1 @@
-Subproject commit 21ae2afd4edaa1b69782c67a54182d34efe43f9c
+Subproject commit 3147391d946bb4b6c68edd901f2add6ac1f31f8c