diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 608a4f2..f71e8fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,11 @@ jobs:
 
       - uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: "1.4.0"
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "24"
 
       - name: install
         run: bun install
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 0000000..814ba81
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,5 @@
+# Paired with .github/workflows/ci.yml — keep both in lockstep when bumping
+# versions, otherwise local dev and CI drift apart on the bun/node pair.
+[tools]
+bun = "1.4.0"
+node = "24"