diff --git a/package-lock.json b/package-lock.json
index f3ac332..4c42d3e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,32 +23,143 @@
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@@ -222,12 +429,65 @@
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+      "requires": {
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@@ -1196,12 +2642,12 @@
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-      "resolved": "https://registry.npmjs.org/which/-/which-1.2.14.tgz",
-      "integrity": "sha1-mofEN48D6CfOyvGs31bHNsAcFOU=",
+      "version": "1.3.1",
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-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
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diff --git a/package.json b/package.json
index 1f92552..b4d0798 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
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   "homepage": "https://github.com/DanRuta/webassembly-webgl-shaders#readme",
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-    "grunt": "^1.0.1",
+    "grunt": "^1.3.0",
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