diff --git a/crates/geo_filters/Cargo.toml b/crates/geo_filters/Cargo.toml
index 9c69752..033b1a8 100644
--- a/crates/geo_filters/Cargo.toml
+++ b/crates/geo_filters/Cargo.toml
@@ -36,7 +36,7 @@ regex = { version = "1", optional = true }
 criterion = "0.5"
 geo_filters = { path = ".", features = ["evaluation"] }
 rand = "0.8"
-rand_chacha = "0.3"
+rand_chacha = "0.9"
 rayon = "1.7"
 
 [[bench]]
diff --git a/crates/string-offsets/Cargo.toml b/crates/string-offsets/Cargo.toml
index fd9b838..8dbdcb1 100644
--- a/crates/string-offsets/Cargo.toml
+++ b/crates/string-offsets/Cargo.toml
@@ -11,4 +11,4 @@ categories = ["algorithms", "data-structures", "text-processing", "development-t
 
 [dev-dependencies]
 rand = "0.8"
-rand_chacha = "0.3"
+rand_chacha = "0.9"