diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index c5349ba93..25b8fb49d 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -11,7 +11,7 @@
 set(CODEC2_TAG 76a20416d715ee06f8b36a9953506876689a3bd2)
 set(CM256CC_TAG f21e8bc1e9afdb0b28672743dcec111aec1d32d9)
 set(MBELIB_TAG 9a04ed5c78176a9965f3d43f7aa1b1f5330e771f)
-set(SERIALDV_TAG "v1.1.3")
+set(SERIALDV_TAG "v1.1.4")
 set(DSDCC_TAG "v1.8.6")
 set(LIMESUITE_TAG "v19.01.0")
 set(BLADERF_TAG "2019.07")