diff --git a/src/libbson b/src/libbson
index ac20e7223..d2ebd1952 160000
--- a/src/libbson
+++ b/src/libbson
@@ -1 +1 @@
-Subproject commit ac20e7223e8e6a02cbe1fb41740382fc59635b4d
+Subproject commit d2ebd1952ee637dca9b9588213f1f0b88e712c17
diff --git a/src/libmongoc b/src/libmongoc
index f0e1ea840..c063949a9 160000
--- a/src/libmongoc
+++ b/src/libmongoc
@@ -1 +1 @@
-Subproject commit f0e1ea8401802fec55e3ff5923807c1f317856bd
+Subproject commit c063949a9574a11032e0e353d9412bf9257ba84d