diff --git a/os/net/security/tinydtls b/os/net/security/tinydtls
index fc8d33cb7..5da931eeb 160000
--- a/os/net/security/tinydtls
+++ b/os/net/security/tinydtls
@@ -1 +1 @@
-Subproject commit fc8d33cb790bfec64acc595e9ab8ba25a2d27b5a
+Subproject commit 5da931eeb78d1cd4a1e0068a91de9b78bd3f66de