diff --git a/src/cohort-extractor b/src/cohort-extractor
index 18c954499..47e859f50 160000
--- a/src/cohort-extractor
+++ b/src/cohort-extractor
@@ -1 +1 @@
-Subproject commit 18c954499ec0a8fbcf5f83e0a4d1bbe2a469b0c1
+Subproject commit 47e859f50b4e2df4cf841d86504fbb658f9e8cb4