diff --git a/popsim b/popsim
index ae01d8985648c38f84be54e22bea2c4e5269ca0d..20dc9c459f45dea5c8adc29373cfc49bc98e079f 160000
--- a/popsim
+++ b/popsim
@@ -1 +1 @@
-Subproject commit ae01d8985648c38f84be54e22bea2c4e5269ca0d
+Subproject commit 20dc9c459f45dea5c8adc29373cfc49bc98e079f