diff --git a/external/fmt b/external/fmt
index 4302d742..873670ba 160000
--- a/external/fmt
+++ b/external/fmt
@@ -1 +1 @@
-Subproject commit 4302d74293620fb6ef1f1b1ad700d1e6dfaa5545
+Subproject commit 873670ba3f9e7bc77ec2c1c94b04f1f8bef77e9f