diff --git a/HISTORY.md b/HISTORY.md
index 3af6aa540..e5dc5a1fa 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -4,6 +4,7 @@
 ## not yet released, version 3.1.5
 
 - Implemented #644: method `Parser.getAll()` to retrieve all defined variables.
+- Upgraded dependencies (decimal.js@5.0.8, fraction.js@3.3.1).
 - Fixed #601: Issue with unnamed typed-functions by upgrading to
   typed-function v0.10.4.
 - Fixed #636: More strict `toTex` templates, reckon with number of arguments.
diff --git a/package.json b/package.json
index e087d1e15..a735e82b2 100644
--- a/package.json
+++ b/package.json
@@ -65,25 +65,25 @@
     "unit"
   ],
   "dependencies": {
-    "decimal.js": "5.0.6",
-    "fraction.js": "3.2.5",
+    "decimal.js": "5.0.8",
+    "fraction.js": "3.3.1",
     "complex.js": "2.0.1",
     "tiny-emitter": "1.0.2",
     "typed-function": "0.10.4"
   },
   "devDependencies": {
-    "glob": "7.0.0",
+    "glob": "7.0.3",
     "gulp": "3.9.1",
     "gulp-util": "3.0.7",
-    "istanbul": "0.4.2",
+    "istanbul": "0.4.3",
     "mkdirp": "0.5.1",
     "mocha": "2.4.5",
     "q": "1.4.1",
     "seed-random": "2.2.0",
     "tar": "2.2.1",
-    "uglify-js": "2.6.1",
+    "uglify-js": "2.6.2",
     "underscore": "1.8.3",
-    "webpack": "1.12.13"
+    "webpack": "1.13.0"
   },
   "main": "./index",
   "scripts": {