diff --git a/package.json b/package.json
index 38d6fb0..2dd022e 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   },
   "homepage": "https://github.com/webpack/memory-fs",
   "devDependencies": {
-    "bl": "^1.0.0",
+    "bl": "^2.2.1",
     "codecov.io": "^0.1.4",
     "coveralls": "^2.11.2",
     "eslint": "^4.0.0",
diff --git a/yarn.lock b/yarn.lock
index 11240bd..ae13f45 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -161,10 +161,10 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-bl@^1.0.0:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.2.tgz#a160911717103c07410cef63ef51b397c025af9c"
-  integrity sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==
+bl@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-2.2.1.tgz#8c11a7b730655c5d56898cdc871224f40fd901d5"
+  integrity sha512-6Pesp1w0DEX1N550i/uGV/TqucVL4AM/pgThFSN/Qq9si1/DF9aIHs1BxD8V/QU0HoeHO6cQRTAuYnLPKq1e4g==
   dependencies:
     readable-stream "^2.3.5"
     safe-buffer "^5.1.1"