diff --git a/Cargo.toml b/Cargo.toml
index 78d513e..8d7a3c2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ histogram = "0.6"
 quickcheck = "0.9"
 rollsum = "0.3"
 criterion = "0.3"
-rand_pcg = "0.2.1"
+rand_pcg = "0.3.1"
 proptest = "0.10.0"
 
 [[bench]]