diff --git a/package-lock.json b/package-lock.json
index 6c47a3a..5360e73 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -426,7 +426,7 @@
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+      "resolved": "https://registry.npmjs.org/bl/-/bl-2.2.1.tgz",
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@@ -854,7 +854,7 @@
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-      "resolved": "http://registry.npmjs.org/browserify/-/browserify-13.3.0.tgz",
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@@ -962,7 +962,7 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
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+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
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-          "resolved": "http://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
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@@ -2377,7 +2377,7 @@
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-      "resolved": "http://registry.npmjs.org/events/-/events-1.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
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@@ -2729,7 +2729,7 @@
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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@@ -3642,13 +3642,13 @@
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-          "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
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-          "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
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@@ -4857,7 +4857,7 @@
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-              "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
+              "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
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@@ -4885,7 +4885,7 @@
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-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
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@@ -7305,7 +7305,7 @@
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-      "resolved": "http://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
+      "resolved": "https://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
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-          "resolved": "http://registry.npmjs.org/through/-/through-1.1.2.tgz",
+          "resolved": "https://registry.npmjs.org/through/-/through-1.1.2.tgz",
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@@ -8746,7 +8746,7 @@
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-          "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
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@@ -8976,7 +8976,7 @@
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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@@ -9213,6 +9213,18 @@
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         "to-buffer": "^1.1.1",
         "xtend": "^4.0.0"
+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.3.tgz",
+          "integrity": "sha512-pvcNpa0UU69UT341rO6AYy4FVAIkUHuZXRIWbq+zHnsVcRzDDjIAhGuuYoi0d//cwIwtt4pkpKycWEfjdV+vww==",
+          "dev": true,
+          "requires": {
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+            "safe-buffer": "^5.1.1"
+          }
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@@ -9427,7 +9439,7 @@
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-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
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@@ -9695,7 +9707,7 @@
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-      "resolved": "http://registry.npmjs.org/vm-browserify/-/vm-browserify-0.0.4.tgz",
+      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-0.0.4.tgz",
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@@ -9815,7 +9827,7 @@
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-          "resolved": "http://registry.npmjs.org/detective/-/detective-5.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/detective/-/detective-5.1.0.tgz",
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@@ -9858,7 +9870,7 @@
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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@@ -9922,7 +9934,7 @@
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-          "resolved": "http://registry.npmjs.org/async/-/async-2.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.0.1.tgz",
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diff --git a/package.json b/package.json
index ad6b8ea..22b74b1 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "test-browser": "npm run pretest && test/browser.sh"
   },
   "dependencies": {
-    "bl": "^1.0.1",
+    "bl": "^2.2.1",
     "create-hash": "^1.1.2",
     "ip": "^1.1.0",
     "through2": "^2.0.0",