diff --git a/external/fmt b/external/fmt
index 0f51ea7..873670b 160000
--- a/external/fmt
+++ b/external/fmt
@@ -1 +1 @@
-Subproject commit 0f51ea79d328d0849c468aa94d8a412e345e09e2
+Subproject commit 873670ba3f9e7bc77ec2c1c94b04f1f8bef77e9f