diff --git a/Project.toml b/Project.toml
index 8690e5601..4fc0b381f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ DataFrames = "1.1"
 Distributions = "0.25"
 MultipleTesting = "0.5"
 PooledArrays = "1.1"
-PopGenCore = "0.5"
+PopGenCore = "0.5.1"
 ProgressMeter = "1.4"
 Reexport = "1"
 StatsBase = "0.33"