diff --git a/.changeset/good-boxes-complain.md b/.changeset/good-boxes-complain.md
new file mode 100644
index 000000000..0c1087ca6
--- /dev/null
+++ b/.changeset/good-boxes-complain.md
@@ -0,0 +1,7 @@
+---
+'@gitbook/react-contentkit': minor
+'@gitbook/react-openapi': minor
+'@gitbook/react-math': minor
+---
+
+Fix files published in the NPM packages by defining "files" in "package.json"
diff --git a/packages/react-contentkit/package.json b/packages/react-contentkit/package.json
index 7f49353c0..3371aaf30 100644
--- a/packages/react-contentkit/package.json
+++ b/packages/react-contentkit/package.json
@@ -23,5 +23,11 @@
         "build": "tsc",
         "typecheck": "tsc --noEmit",
         "dev": "tsc -w"
-    }
+    },
+    "files": [
+        "dist",
+        "src",
+        "README.md",
+        "CHANGELOG.md"
+    ]
 }
diff --git a/packages/react-math/package.json b/packages/react-math/package.json
index 1b0140947..83d0aed20 100644
--- a/packages/react-math/package.json
+++ b/packages/react-math/package.json
@@ -22,5 +22,12 @@
         "build": "tsc",
         "typecheck": "tsc --noEmit",
         "dev": "tsc -w"
-    }
+    },
+    "files": [
+        "dist",
+        "src",
+        "css",
+        "README.md",
+        "CHANGELOG.md"
+    ]
 }
diff --git a/packages/react-openapi/package.json b/packages/react-openapi/package.json
index 35f89fd42..4d1974d8f 100644
--- a/packages/react-openapi/package.json
+++ b/packages/react-openapi/package.json
@@ -30,5 +30,11 @@
         "typecheck": "tsc --noEmit",
         "unit": "bun test",
         "dev": "tsc -w"
-    }
+    },
+    "files": [
+        "dist",
+        "src",
+        "README.md",
+        "CHANGELOG.md"
+    ]
 }