diff --git a/src/LIBMONGOC_VERSION_CURRENT b/src/LIBMONGOC_VERSION_CURRENT
index 141f2e80..7fad2ea3 100644
--- a/src/LIBMONGOC_VERSION_CURRENT
+++ b/src/LIBMONGOC_VERSION_CURRENT
@@ -1 +1 @@
-1.15.0
+1.15.1-20190828+gitcf50d6315a
diff --git a/src/libmongoc b/src/libmongoc
index baa96873..cf50d631 160000
--- a/src/libmongoc
+++ b/src/libmongoc
@@ -1 +1 @@
-Subproject commit baa96873de7422696d6870376d27ede945665f57
+Subproject commit cf50d6315a581a3c96cb43ae46f87c7b762f24e2