diff --git a/package.json b/package.json
index 0633116..3e45360 100644
--- a/package.json
+++ b/package.json
@@ -44,9 +44,9 @@
     "contributors": "https://github.com/TryGhost/Casper/graphs/contributors",
     "devDependencies": {
         "autoprefixer": "6.3.6",
-        "beeper": "^1.1.1",
+        "beeper": "1.1.1",
         "cssnano": "3.7.1",
-        "gscan": "^2.0.0",
+        "gscan": "2.0.0",
         "gulp": "3.9.1",
         "gulp-filter": "5.1.0",
         "gulp-livereload": "3.8.1",
diff --git a/yarn.lock b/yarn.lock
index d195252..1e4439e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -454,7 +454,7 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-beeper@^1.0.0, beeper@^1.1.1:
+beeper@1.1.1, beeper@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/beeper/-/beeper-1.1.1.tgz#e6d5ea8c5dad001304a70b22638447f69cb2f809"
 
@@ -1784,7 +1784,7 @@ graceful-fs@~1.2.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
 
-gscan@^2.0.0:
+gscan@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/gscan/-/gscan-2.0.0.tgz#049e791ce3315359f7cd2280f0a334a88c22de77"
   dependencies: