diff --git a/submodules/source-serif b/submodules/source-serif
index 9b948a3e..5f220b17 160000
--- a/submodules/source-serif
+++ b/submodules/source-serif
@@ -1 +1 @@
-Subproject commit 9b948a3e2edd76f787adc20d254d470df329bc94
+Subproject commit 5f220b17d27ed64873f22cde0dd593685387bd19