diff --git a/external/qwt b/external/qwt
index 8b13815..97d99b4 160000
--- a/external/qwt
+++ b/external/qwt
@@ -1 +1 @@
-Subproject commit 8b138154a9b4f646eef98f654e081ffb1e7c7d80
+Subproject commit 97d99b47bef9a941ec51d505abd120f6f6d9b51e