diff --git a/README.md b/README.md
index 1c518cf..c6036f6 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Theme Tools by Basalt
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/basaltinc/theme-tools.svg)](https://greenkeeper.io/)
+
 > Flexible, un-opinionated tools for front end development.
 
 This is a monorepo of a lot of awesome stuff. Everything in `packages/` can be `npm install`-ed by itself - and each of those packages is focused on solving a single need in front end web development, like needing to work with CSS for example. As many know, there's so much more to a good setup than just compiling Scss to CSS: linting, docs, compressing, handling vendor prefixes, managing file assets CSS needs like font files & images - not to mention a watch task for each of those. And that's what Theme Tools plugins do: they solve a collection of challenges to effective tooling around a single need. These examples are just around `plugin-sass`; there's several others as well and they all can be combined in different ways depending on the needs of the specific project - use as many or as little as you'd like - even in your pre-existing setup.
diff --git a/greenkeeper.json b/greenkeeper.json
new file mode 100644
index 0000000..fac2e5d
--- /dev/null
+++ b/greenkeeper.json
@@ -0,0 +1,23 @@
+{
+  "groups": {
+    "default": {
+      "packages": [
+        "examples/common/package.json",
+        "examples/jekyll/package.json",
+        "package.json",
+        "packages/core/package.json",
+        "packages/generator-theme/package.json",
+        "packages/plugin-browser-sync/package.json",
+        "packages/plugin-icon-font/package.json",
+        "packages/plugin-jekyll/package.json",
+        "packages/plugin-js-concat-babel/package.json",
+        "packages/plugin-pattern-lab-php/package.json",
+        "packages/plugin-sass/package.json",
+        "packages/plugin-shell/package.json",
+        "packages/plugin-webpack/package.json",
+        "packages/sass-export-data/package.json",
+        "packages/sass-import-globbing/package.json"
+      ]
+    }
+  }
+}
diff --git a/package.json b/package.json
index bf736a8..6c36280 100644
--- a/package.json
+++ b/package.json
@@ -30,16 +30,16 @@
   },
   "homepage": "https://github.com/basaltinc/theme-tools#readme",
   "devDependencies": {
-    "chai": "^3.5.0",
-    "chai-fs": "^1.0.0",
-    "eslint": "^3.19.0",
-    "eslint-config-airbnb": "^14.1.0",
+    "chai": "^4.2.0",
+    "chai-fs": "^2.0.0",
+    "eslint": "^5.9.0",
+    "eslint-config-airbnb": "^17.1.0",
     "eslint-plugin-import": "^2.2.0",
-    "eslint-plugin-jsx-a11y": "^4.0.0",
-    "eslint-plugin-react": "^6.10.3",
-    "husky": "^0.13.3",
-    "lerna": "^2.0.0-rc.5",
-    "mocha": "^3.3.0",
+    "eslint-plugin-jsx-a11y": "^6.1.2",
+    "eslint-plugin-react": "^7.11.1",
+    "husky": "^1.2.0",
+    "lerna": "^3.6.0",
+    "mocha": "^5.2.0",
     "nodemon": "^1.11.0"
   }
 }
diff --git a/packages/generator-theme/package.json b/packages/generator-theme/package.json
index 532eaa9..e40f2a8 100644
--- a/packages/generator-theme/package.json
+++ b/packages/generator-theme/package.json
@@ -17,14 +17,14 @@
     "yeoman-generator"
   ],
   "devDependencies": {
-    "mocha": "^3.3.0",
+    "mocha": "^5.2.0",
     "yeoman-assert": "^3.0.0",
     "yeoman-test": "^1.6.0"
   },
   "dependencies": {
-    "chalk": "^1.1.3",
+    "chalk": "^2.4.1",
     "js-yaml": "^3.8.3",
-    "yeoman-generator": "^1.0.0",
+    "yeoman-generator": "^3.1.1",
     "yosay": "^2.0.0"
   },
   "scripts": {
diff --git a/packages/plugin-browser-sync/package.json b/packages/plugin-browser-sync/package.json
index 451ffaf..5d926ef 100644
--- a/packages/plugin-browser-sync/package.json
+++ b/packages/plugin-browser-sync/package.json
@@ -21,6 +21,6 @@
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
     "browser-sync": "^2.18.8",
-    "debug": "^2.6.8"
+    "debug": "^4.1.0"
   }
 }
diff --git a/packages/plugin-icon-font/package.json b/packages/plugin-icon-font/package.json
index b878c09..3793f5a 100644
--- a/packages/plugin-icon-font/package.json
+++ b/packages/plugin-icon-font/package.json
@@ -16,9 +16,9 @@
   },
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
-    "del": "^2.2.2",
+    "del": "^3.0.0",
     "gulp": "^4.0.0",
-    "gulp-iconfont": "^8.0.1",
+    "gulp-iconfont": "^10.0.2",
     "lodash.template": "^4.4.0"
   }
 }
diff --git a/packages/plugin-js-concat-babel/package.json b/packages/plugin-js-concat-babel/package.json
index f2f91af..0354b5d 100644
--- a/packages/plugin-js-concat-babel/package.json
+++ b/packages/plugin-js-concat-babel/package.json
@@ -20,15 +20,15 @@
   },
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
-    "cached": "^4.3.0",
-    "del": "^2.2.2",
+    "cached": "^5.0.0",
+    "del": "^3.0.0",
     "gulp": "^4.0.0",
-    "gulp-babel": "^6.1.2",
+    "gulp-babel": "^8.0.0",
     "gulp-cached": "^1.1.1",
     "gulp-concat": "^2.6.1",
-    "gulp-eslint": "^3.0.1",
+    "gulp-eslint": "^5.0.0",
     "gulp-if": "^2.0.2",
     "gulp-sourcemaps": "^2.6.0",
-    "gulp-uglify": "^2.1.2"
+    "gulp-uglify": "^3.0.1"
   }
 }
diff --git a/packages/plugin-pattern-lab-php/package.json b/packages/plugin-pattern-lab-php/package.json
index 927dc65..6f3c8ea 100644
--- a/packages/plugin-pattern-lab-php/package.json
+++ b/packages/plugin-pattern-lab-php/package.json
@@ -19,7 +19,7 @@
   },
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
-    "debug": "^3.1.0",
+    "debug": "^4.1.0",
     "glob": "^7.1.2",
     "gulp": "^4.0.0",
     "js-yaml": "^3.8.3"
diff --git a/packages/plugin-sass/package.json b/packages/plugin-sass/package.json
index 9444861..cc91b93 100644
--- a/packages/plugin-sass/package.json
+++ b/packages/plugin-sass/package.json
@@ -20,25 +20,25 @@
     "@theme-tools/core": "^1.0.0",
     "@theme-tools/sass-export-data": "^1.1.1",
     "@theme-tools/sass-import-globbing": "^1.0.1",
-    "autoprefixer": "^6.7.7",
-    "cssnano": "^3.10.0",
-    "debug": "^2.6.8",
-    "del": "^2.2.2",
+    "autoprefixer": "^9.4.2",
+    "cssnano": "^4.1.7",
+    "debug": "^4.1.0",
+    "del": "^3.0.0",
     "gulp": "^4.0.0",
     "gulp-cached": "^1.1.1",
-    "gulp-flatten": "^0.3.1",
+    "gulp-flatten": "^0.4.0",
     "gulp-if": "^2.0.2",
     "gulp-notify": "^3.0.0",
     "gulp-plumber": "^1.1.0",
-    "gulp-postcss": "^7.0.0",
-    "gulp-sass": "^3.1.0",
+    "gulp-postcss": "^8.0.0",
+    "gulp-sass": "^4.0.2",
     "gulp-sourcemaps": "^2.6.0",
-    "gulp-stylelint": "^3.9.0",
+    "gulp-stylelint": "^8.0.0",
     "gulp-util": "^3.0.8",
-    "postcss-discard-duplicates": "^2.1.0",
-    "postcss-flexbugs-fixes": "^3.2.0",
-    "postcss-url": "^7.1.2",
+    "postcss-discard-duplicates": "^4.0.2",
+    "postcss-flexbugs-fixes": "^4.1.0",
+    "postcss-url": "^8.0.0",
     "sassdoc": "^2.2.2",
-    "stylelint-scss": "^1.4.4"
+    "stylelint-scss": "^3.4.1"
   }
 }
diff --git a/packages/plugin-webpack/package.json b/packages/plugin-webpack/package.json
index 344bb96..b6f0b6b 100644
--- a/packages/plugin-webpack/package.json
+++ b/packages/plugin-webpack/package.json
@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
-    "debug": "^2.6.8",
-    "webpack-mild-compile": "^1.0.0"
+    "debug": "^4.1.0",
+    "webpack-mild-compile": "^3.3.1"
   }
 }
diff --git a/packages/sass-export-data/package.json b/packages/sass-export-data/package.json
index 3ad4acb..e308faa 100644
--- a/packages/sass-export-data/package.json
+++ b/packages/sass-export-data/package.json
@@ -20,13 +20,13 @@
   },
   "dependencies": {
     "@theme-tools/core": "^1.0.0",
-    "fs-extra": "^5.0.0",
-    "jsondiffpatch": "^0.2.5"
+    "fs-extra": "^7.0.1",
+    "jsondiffpatch": "^0.3.11"
   },
   "devDependencies": {
-    "chai": "^4.1.2",
-    "chai-fs": "^1.0.0",
-    "mocha": "^4.0.1",
+    "chai": "^4.2.0",
+    "chai-fs": "^2.0.0",
+    "mocha": "^5.2.0",
     "node-sass": "^4.5.3"
   }
 }
diff --git a/packages/sass-import-globbing/package.json b/packages/sass-import-globbing/package.json
index 3371495..2a74be6 100644
--- a/packages/sass-import-globbing/package.json
+++ b/packages/sass-import-globbing/package.json
@@ -17,7 +17,7 @@
     "access": "public"
   },
   "dependencies": {
-    "debug": "^3.1.0",
+    "debug": "^4.1.0",
     "glob": "^7.1.2"
   }
 }