diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8ffa5f..9afe047 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -114,7 +114,7 @@ jobs:
 
           - name: linux
             os: ubuntu-22.04
-            rust-toolchain: "1.87"
+            rust-toolchain: "1.90"
             rust-special: -msrv
 
     steps:
diff --git a/dodge-the-creeps/rust/Cargo.toml b/dodge-the-creeps/rust/Cargo.toml
index 8fbd9c2..6e127dd 100644
--- a/dodge-the-creeps/rust/Cargo.toml
+++ b/dodge-the-creeps/rust/Cargo.toml
@@ -2,7 +2,7 @@
 name = "dodge-the-creeps"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.85"
+rust-version = "1.90"
 license = "MPL-2.0"
 publish = false
 
diff --git a/hot-reload/rust/Cargo.toml b/hot-reload/rust/Cargo.toml
index 58e8f83..9f7d47b 100644
--- a/hot-reload/rust/Cargo.toml
+++ b/hot-reload/rust/Cargo.toml
@@ -2,7 +2,7 @@
 name = "hot-reload"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.90"
 license = "MPL-2.0"
 publish = false
 
diff --git a/squash-the-creeps/rust/Cargo.toml b/squash-the-creeps/rust/Cargo.toml
index e4ceeb0..ad28979 100644
--- a/squash-the-creeps/rust/Cargo.toml
+++ b/squash-the-creeps/rust/Cargo.toml
@@ -2,7 +2,7 @@
 name = "squash-the-creeps"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.85"
+rust-version = "1.90"
 license = "MPL-2.0"
 publish = false