diff --git a/package.json b/package.json
index d90855f..befcfef 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "travisDeployKey": "./bin/generate_travis_deploy_key"
   },
   "dependencies": {
-    "buffer-to-stream": "^1.0.0",
+    "buffer-to-stream": "1.0.0",
     "cozy-konnector-libs": "4.56.4",
     "soap": "0.32.0"
   },
diff --git a/yarn.lock b/yarn.lock
index b953cdf..2584254 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -969,7 +969,7 @@ buffer-from@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
   integrity sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==
 
-buffer-to-stream@^1.0.0:
+buffer-to-stream@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/buffer-to-stream/-/buffer-to-stream-1.0.0.tgz#64ae615303fdce9446c8a1ea50239e178a5b49ed"
   integrity sha512-EMiRQgNY0mFGbPm7zV3b7vc1mSNs7WSkZvH2Rmvl2tjTe43uCuRlCVw1OAEon7NXBTT7He1Pf2lLoKKgvcAujA==