diff --git a/Cargo.lock b/Cargo.lock
index 65c8629..0ab916a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1018,7 +1018,7 @@ checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
  "libc",
  "rand_chacha",
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -1028,7 +1028,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -1040,13 +1040,19 @@ dependencies = [
  "getrandom 0.2.17",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c8d0fd677905edcbeedbf2edb6494d676f0e98d54d5cf9bda0b061cb8fb8aba"
+
 [[package]]
 name = "rand_pcg"
-version = "0.3.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59cad018caf63deb318e5a4586d99a24424a364f40f1e5778c29aca23f4fc73e"
+checksum = "caa0f4137e1c0a72f4c651489402276c8e8e1cf081f3b0ba156d2cbeef09e86a"
 dependencies = [
- "rand_core",
+ "rand_core 0.10.0",
 ]
 
 [[package]]
@@ -1055,7 +1061,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d25bf25ec5ae4a3f1b92f929810509a2f53d7dca2f50b794ff57e3face536c8f"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
diff --git a/crates/ymir-core/Cargo.toml b/crates/ymir-core/Cargo.toml
index 2a4184b..9d4398a 100644
--- a/crates/ymir-core/Cargo.toml
+++ b/crates/ymir-core/Cargo.toml
@@ -17,4 +17,4 @@ categories = ["simulation", "science"]
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 rand = "0.8"
-rand_pcg = "0.3"
+rand_pcg = "0.10"
diff --git a/crates/ymir-detail/Cargo.toml b/crates/ymir-detail/Cargo.toml
index b033a75..f0af065 100644
--- a/crates/ymir-detail/Cargo.toml
+++ b/crates/ymir-detail/Cargo.toml
@@ -16,7 +16,7 @@ categories = ["simulation", "science"]
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 rand = "0.8"
-rand_pcg = "0.3"
+rand_pcg = "0.10"
 ymir-core = { path = "../ymir-core", version = "0.1.0" }
 ymir-surface = { path = "../ymir-surface", version = "0.1.0" }
 ymir-climate = { path = "../ymir-climate", version = "0.1.0" }