diff --git a/packages/babel-core/package.json b/packages/babel-core/package.json
index 785dd3a65b..2a84cdef25 100644
--- a/packages/babel-core/package.json
+++ b/packages/babel-core/package.json
@@ -32,21 +32,17 @@
     "babel-template": "7.0.0-alpha.12",
     "babel-traverse": "7.0.0-alpha.12",
     "babel-types": "7.0.0-alpha.12",
-    "babylon": "7.0.0-beta.13",
+    "babylon": "7.0.0-beta.15",
     "convert-source-map": "^1.1.0",
     "debug": "^2.1.1",
     "json5": "^0.5.0",
     "lodash": "^4.2.0",
     "micromatch": "^2.3.11",
-    "private": "^0.1.6",
     "resolve": "^1.3.2",
-    "slash": "^1.0.0",
     "source-map": "^0.5.0"
   },
   "devDependencies": {
-    "babel-helper-fixtures": "7.0.0-alpha.12",
     "babel-helper-transform-fixture-test-runner": "7.0.0-alpha.12",
-    "babel-polyfill": "7.0.0-alpha.12",
     "babel-register": "7.0.0-alpha.12"
   }
 }
diff --git a/packages/babel-generator/package.json b/packages/babel-generator/package.json
index ec5bf9846a..5d78a52f3f 100644
--- a/packages/babel-generator/package.json
+++ b/packages/babel-generator/package.json
@@ -20,6 +20,6 @@
   },
   "devDependencies": {
     "babel-helper-fixtures": "7.0.0-alpha.12",
-    "babylon": "^7.0.0-beta.13"
+    "babylon": "^7.0.0-beta.15"
   }
 }
diff --git a/packages/babel-traverse/package.json b/packages/babel-traverse/package.json
index a536ed3f90..0bacc97fc2 100644
--- a/packages/babel-traverse/package.json
+++ b/packages/babel-traverse/package.json
@@ -12,7 +12,7 @@
     "babel-helper-function-name": "7.0.0-alpha.12",
     "babel-messages": "7.0.0-alpha.12",
     "babel-types": "7.0.0-alpha.12",
-    "babylon": "7.0.0-beta.13",
+    "babylon": "7.0.0-beta.15",
     "debug": "^2.2.0",
     "globals": "^9.0.0",
     "invariant": "^2.2.0",
diff --git a/packages/babel-types/package.json b/packages/babel-types/package.json
index a3208469fd..c487c9927b 100644
--- a/packages/babel-types/package.json
+++ b/packages/babel-types/package.json
@@ -14,6 +14,6 @@
   },
   "devDependencies": {
     "babel-generator": "7.0.0-alpha.12",
-    "babylon": "^7.0.0-beta.13"
+    "babylon": "^7.0.0-beta.15"
   }
 }