diff --git a/package-lock.json b/package-lock.json
index 5782d7f9cd..f7ee7a63e9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2271,17 +2271,33 @@
       }
     },
     "bl": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/bl/-/bl-4.0.0.tgz",
-      "integrity": "sha512-QwQvAZZA1Bw1FWnhNj2X5lu+sPxxB2ITH3mqEqYyahN6JZR13ONjk+XiTnBaGEzMPUrAgOkaD68pBH1rvPRPsw==",
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.0.2.tgz",
+      "integrity": "sha512-j4OH8f6Qg2bGuWfRiltT2HYGx0e1QcBTrK9KAHNMwMZdQnDZFk0ZSYIpADjYCB3U12nicC5tVJwSIhwOWjb4RQ==",
       "requires": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
         "readable-stream": "^3.4.0"
       },
       "dependencies": {
+        "buffer": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.5.0.tgz",
+          "integrity": "sha512-9FTEDjLjwoAkEwyMGDjYJQN2gfRgOKBKRfiglhvibGbpeeU/pQn1bJxQqm32OD/AIeEuHxU9roxXxg34Byp/Ww==",
+          "requires": {
+            "base64-js": "^1.0.2",
+            "ieee754": "^1.1.4"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
         "readable-stream": {
-          "version": "3.4.0",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.4.0.tgz",
-          "integrity": "sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==",
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
           "requires": {
             "inherits": "^2.0.3",
             "string_decoder": "^1.1.1",
diff --git a/package.json b/package.json
index a43b154473..42433c9523 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "babel-preset-env": "^1.6.1",
     "bitfinex-api-node": "^4.0.10",
     "bitstamp": "^1.0.4",
-    "bl": "^4.0.0",
+    "bl": "^4.0.2",
     "bollinger-bands": "^3.0.1",
     "bootstrap": "^4.3.1",
     "ccxt": "^1.24.97",