diff --git a/packages/gatsby-plugin-styletron/README.md b/packages/gatsby-plugin-styletron/README.md
index 0ac99157e47fb..bc5b7c1109248 100644
--- a/packages/gatsby-plugin-styletron/README.md
+++ b/packages/gatsby-plugin-styletron/README.md
@@ -9,7 +9,7 @@ rendering support.
 ## Install
 
 ```shell
-npm install gatsby-plugin-styletron
+npm install gatsby-plugin-styletron styletron-react styletron-engine-atomic
 ```
 
 ## How to use
diff --git a/packages/gatsby-plugin-styletron/package.json b/packages/gatsby-plugin-styletron/package.json
index c182993472ef6..6328078794af9 100644
--- a/packages/gatsby-plugin-styletron/package.json
+++ b/packages/gatsby-plugin-styletron/package.json
@@ -7,15 +7,15 @@
     "url": "https://github.com/gatsbyjs/gatsby/issues"
   },
   "dependencies": {
-    "@babel/runtime": "^7.8.7",
-    "styletron-engine-atomic": "^1.4.6",
-    "styletron-react": "^5.2.7"
+    "@babel/runtime": "^7.8.7"
   },
   "devDependencies": {
     "@babel/cli": "^7.8.4",
     "@babel/core": "^7.8.7",
     "babel-preset-gatsby-package": "^0.3.1",
-    "cross-env": "^5.2.1"
+    "cross-env": "^5.2.1",
+    "styletron-engine-atomic": "^1.4.6",
+    "styletron-react": "^5.2.7"
   },
   "homepage": "https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-styletron#readme",
   "keywords": [
@@ -25,7 +25,9 @@
   "license": "MIT",
   "main": "index.js",
   "peerDependencies": {
-    "gatsby": "^2.0.0"
+    "gatsby": "^2.0.0",
+    "styletron-engine-atomic": "^1.4.6",
+    "styletron-react": "^5.2.7"
   },
   "repository": {
     "type": "git",