diff --git a/external/qwt b/external/qwt
index 09cadfc..6ec4ad4 160000
--- a/external/qwt
+++ b/external/qwt
@@ -1 +1 @@
-Subproject commit 09cadfc1a79c997a7a1b0170a319eabf91ac1c98
+Subproject commit 6ec4ad486bce39ecdeb6aed8a5b813fbd6dcc829