diff --git a/packages/react-scripts/package.json b/packages/react-scripts/package.json
index dd20d74..6629a53 100644
--- a/packages/react-scripts/package.json
+++ b/packages/react-scripts/package.json
@@ -26,10 +26,10 @@
   },
   "dependencies": {
     "autoprefixer": "7.1.6",
-    "babel-core": "6.26.0",
+    "babel-core": "6.26.3",
     "babel-eslint": "7.2.3",
     "babel-jest": "20.0.3",
-    "babel-loader": "7.1.2",
+    "babel-loader": "7.1.5",
     "babel-preset-react-app": "^3.1.0",
     "babel-runtime": "6.26.0",
     "case-sensitive-paths-webpack-plugin": "2.1.1",
diff --git a/yarn.lock b/yarn.lock
index e98338c..f8ad808 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -337,7 +337,31 @@ babel-code-frame@6.26.0, babel-code-frame@^6.11.0, babel-code-frame@^6.22.0, bab
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
-babel-core@6.26.0, babel-core@^6.0.0, babel-core@^6.26.0:
+babel-core@6.26.3:
+  version "6.26.3"
+  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz#b2e2f09e342d0f0c88e2f02e067794125e75c207"
+  dependencies:
+    babel-code-frame "^6.26.0"
+    babel-generator "^6.26.0"
+    babel-helpers "^6.24.1"
+    babel-messages "^6.23.0"
+    babel-register "^6.26.0"
+    babel-runtime "^6.26.0"
+    babel-template "^6.26.0"
+    babel-traverse "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    convert-source-map "^1.5.1"
+    debug "^2.6.9"
+    json5 "^0.5.1"
+    lodash "^4.17.4"
+    minimatch "^3.0.4"
+    path-is-absolute "^1.0.1"
+    private "^0.1.8"
+    slash "^1.0.0"
+    source-map "^0.5.7"
+
+babel-core@^6.0.0, babel-core@^6.26.0:
   version "6.26.0"
   resolved "https://registry.npmjs.org/babel-core/-/babel-core-6.26.0.tgz#af32f78b31a6fcef119c87b0fd8d9753f03a0bb8"
   dependencies:
@@ -500,9 +524,9 @@ babel-jest@20.0.3, babel-jest@^20.0.3:
     babel-plugin-istanbul "^4.0.0"
     babel-preset-jest "^20.0.3"
 
-babel-loader@7.1.2:
-  version "7.1.2"
-  resolved "https://registry.npmjs.org/babel-loader/-/babel-loader-7.1.2.tgz#f6cbe122710f1aa2af4d881c6d5b54358ca24126"
+babel-loader@7.1.5:
+  version "7.1.5"
+  resolved "https://registry.yarnpkg.com/babel-loader/-/babel-loader-7.1.5.tgz#e3ee0cd7394aa557e013b02d3e492bfd07aa6d68"
   dependencies:
     find-cache-dir "^1.0.0"
     loader-utils "^1.0.2"
@@ -1694,6 +1718,12 @@ convert-source-map@^1.4.0, convert-source-map@^1.5.0:
   version "1.5.0"
   resolved "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.5.0.tgz#9acd70851c6d5dfdd93d9282e5edf94a03ff46b5"
 
+convert-source-map@^1.5.1:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.6.0.tgz#51b537a8c43e0f04dec1993bffcdd504e758ac20"
+  dependencies:
+    safe-buffer "~5.1.1"
+
 cookie-signature@1.0.6:
   version "1.0.6"
   resolved "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
@@ -1935,7 +1965,7 @@ dateformat@^1.0.11, dateformat@^1.0.12:
     get-stdin "^4.0.1"
     meow "^3.3.0"
 
-debug@2.6.9, debug@^2.2.0, debug@^2.6.0, debug@^2.6.6, debug@^2.6.8:
+debug@2.6.9, debug@^2.2.0, debug@^2.6.0, debug@^2.6.6, debug@^2.6.8, debug@^2.6.9:
   version "2.6.9"
   resolved "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
@@ -5306,7 +5336,7 @@ pretty-format@^20.0.3:
     ansi-regex "^2.1.1"
     ansi-styles "^3.0.0"
 
-private@^0.1.6, private@^0.1.7:
+private@^0.1.6, private@^0.1.7, private@^0.1.8:
   version "0.1.8"
   resolved "https://registry.npmjs.org/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
 
@@ -6048,7 +6078,7 @@ source-map-support@^0.4.15:
   dependencies:
     source-map "^0.5.6"
 
-source-map@0.5.x, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1, source-map@~0.5.3, source-map@~0.5.6:
+source-map@0.5.x, source-map@^0.5.3, source-map@^0.5.6, source-map@^0.5.7, source-map@~0.5.1, source-map@~0.5.3, source-map@~0.5.6:
   version "0.5.7"
   resolved "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"