diff --git a/Cargo.lock b/Cargo.lock
index 8b4d65a843..5dfc54bb80 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2953,6 +2953,7 @@ dependencies = [
  "minifb 0.12.0 (git+https://github.com/emoon/rust_minifb.git)",
  "noise 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "vek 0.9.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "veloren-common 0.2.0",
 ]
diff --git a/world/Cargo.toml b/world/Cargo.toml
index 3be35d6247..80ca1726bd 100644
--- a/world/Cargo.toml
+++ b/world/Cargo.toml
@@ -11,6 +11,7 @@ noise = "0.5.1"
 fxhash = "0.2.1"
 lazy_static = "1.3.0"
 rand = "0.7.0"
+rand_chacha = "0.2.1"
 
 [dev-dependencies]
 minifb = { git = "https://github.com/emoon/rust_minifb.git" }
diff --git a/world/src/sim/mod.rs b/world/src/sim/mod.rs
index 11baa60b1f..c02a1385b9 100644
--- a/world/src/sim/mod.rs
+++ b/world/src/sim/mod.rs
@@ -15,7 +15,8 @@ use common::{
     vol::VolSize,
 };
 use noise::{BasicMulti, HybridMulti, MultiFractal, NoiseFn, RidgedMulti, Seedable, SuperSimplex};
-use rand::{rngs::StdRng, Rng, SeedableRng};
+use rand::{Rng, SeedableRng};
+use rand_chacha::ChaChaRng;
 use std::ops::{Add, Div, Mul, Neg, Sub};
 use vek::*;
 
@@ -49,7 +50,7 @@ pub struct WorldSim {
     pub(crate) locations: Vec<Location>,
 
     pub(crate) gen_ctx: GenCtx,
-    pub rng: StdRng,
+    pub rng: ChaChaRng,
 }
 
 impl WorldSim {
@@ -93,7 +94,7 @@ impl WorldSim {
             chunks,
             locations: Vec::new(),
             gen_ctx,
-            rng: StdRng::from_seed([
+            rng: ChaChaRng::from_seed([
                 (seed >> 0) as u8,
                 0,
                 0,