diff --git a/package.json b/package.json
index 6086bfb1f35..37eb5c9f73a 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   },
   "devDependencies": {
     "async": "^2.0.0",
+    "dictionary-en-us": "^1.0.2",
     "glob": "^7.0.5",
     "ignore": "^3.1.3",
     "js-yaml": "^3.6.1",
@@ -20,6 +21,7 @@
     "retext-repeated-words": "^1.0.0",
     "retext-sentence-spacing": "^1.0.0",
     "retext-simplify": "^3.0.0",
+    "retext-spell": "^1.0.0",
     "retext-words": "bkeepers/retext-words",
     "to-vfile": "^2.1.0",
     "unified": "^5.0.0",
diff --git a/script/test-prose b/script/test-prose
index ab1893fcca0..cc35bb26f76 100755
--- a/script/test-prose
+++ b/script/test-prose
@@ -15,6 +15,8 @@ var sentenceSpacing = require('retext-sentence-spacing');
 var quotes = require('retext-quotes');
 var words = require('retext-words');
 var repeated = require('retext-repeated-words');
+var spell = require('retext-spell');
+var dictionary = require('dictionary-en-us');
 
 // Util stuff
 var vfile = require('to-vfile');
@@ -30,6 +32,7 @@ var ignore = require('ignore')().add(jekyllConfig.exclude)
 // Prose checking pipeline
 var prose = unified()
   .use(english)
+  .use(spell, dictionary)
   .use(sentenceSpacing, {preferred: 1})
   .use(quotes, {preferred: 'straight'})
   .use(words, {