diff --git a/.changeset/stale-buses-dream.md b/.changeset/stale-buses-dream.md
new file mode 100644
index 00000000..11313816
--- /dev/null
+++ b/.changeset/stale-buses-dream.md
@@ -0,0 +1,5 @@
+---
+"mdxts": minor
+---
+
+Moves `@types` packages from dependencies to dev dependencies to reduce npm install size. These should be included in the project `mdxts` is used in now e.g. `npm install @types/react`.
diff --git a/packages/mdxts/package.json b/packages/mdxts/package.json
index e9699d83..95960e60 100644
--- a/packages/mdxts/package.json
+++ b/packages/mdxts/package.json
@@ -100,6 +100,12 @@
     "@swc/cli": "^0.3.12",
     "@swc/core": "^1.4.17",
     "@types/glob-parent": "5.1.3",
+    "@types/hast": "^3.0.4",
+    "@types/mdast": "^4.0.3",
+    "@types/mdx": "^2.0.13",
+    "@types/react": "^18.3.1",
+    "@types/react-dom": "^18.3.0",
+    "@types/title": "^3.4.3",
     "@types/webpack-env": "1.18.4",
     "@types/ws": "^8.5.10",
     "next": "14.2.3",
@@ -121,12 +127,6 @@
     "@remark-embedder/transformer-codesandbox": "^3.0.0",
     "@sindresorhus/slugify": "^2.2.1",
     "@tsxmod/utils": "^0.5.1",
-    "@types/hast": "^3.0.4",
-    "@types/mdast": "^4.0.3",
-    "@types/mdx": "^2.0.13",
-    "@types/react": "^18.3.1",
-    "@types/react-dom": "^18.3.0",
-    "@types/title": "^3.4.3",
     "case-anything": "^2.1.13",
     "chalk": "^4.1.2",
     "chokidar": "^3.6.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 93e907c8..00c430f8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -137,24 +137,6 @@ importers:
       '@tsxmod/utils':
         specifier: ^0.5.1
         version: 0.5.1(ts-morph@22.0.0)
-      '@types/hast':
-        specifier: ^3.0.4
-        version: 3.0.4
-      '@types/mdast':
-        specifier: ^4.0.3
-        version: 4.0.3
-      '@types/mdx':
-        specifier: ^2.0.13
-        version: 2.0.13
-      '@types/react':
-        specifier: ^18.3.1
-        version: 18.3.1
-      '@types/react-dom':
-        specifier: ^18.3.0
-        version: 18.3.0
-      '@types/title':
-        specifier: ^3.4.3
-        version: 3.4.3
       case-anything:
         specifier: ^2.1.13
         version: 2.1.13
@@ -273,6 +255,24 @@ importers:
       '@types/glob-parent':
         specifier: 5.1.3
         version: 5.1.3
+      '@types/hast':
+        specifier: ^3.0.4
+        version: 3.0.4
+      '@types/mdast':
+        specifier: ^4.0.3
+        version: 4.0.3
+      '@types/mdx':
+        specifier: ^2.0.13
+        version: 2.0.13
+      '@types/react':
+        specifier: ^18.3.1
+        version: 18.3.1
+      '@types/react-dom':
+        specifier: ^18.3.0
+        version: 18.3.0
+      '@types/title':
+        specifier: ^3.4.3
+        version: 3.4.3
       '@types/webpack-env':
         specifier: 1.18.4
         version: 1.18.4