diff --git a/VERSION.md b/VERSION.md
index 4213f6c90..843c88771 100644
--- a/VERSION.md
+++ b/VERSION.md
@@ -1 +1 @@
-1.2.2516
+1.2.2520
diff --git a/yosys b/yosys
index b08688f71..28ebefda4 160000
--- a/yosys
+++ b/yosys
@@ -1 +1 @@
-Subproject commit b08688f71197316cd44859b8ced16136cf1b3957
+Subproject commit 28ebefda4ac6f534d1e7d3f00224040df0fc5b81