diff --git a/packaging/create-unity-packages/yarn.lock b/packaging/create-unity-packages/yarn.lock
index ee01d7e0..352eb973 100644
--- a/packaging/create-unity-packages/yarn.lock
+++ b/packaging/create-unity-packages/yarn.lock
@@ -235,9 +235,9 @@ base64-js@^1.0.2:
   integrity sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g==
 
 bl@^1.0.0:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.2.tgz#a160911717103c07410cef63ef51b397c025af9c"
-  integrity sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.3.tgz#1e8dd80142eac80d7158c9dccc047fb620e035e7"
+  integrity sha512-pvcNpa0UU69UT341rO6AYy4FVAIkUHuZXRIWbq+zHnsVcRzDDjIAhGuuYoi0d//cwIwtt4pkpKycWEfjdV+vww==
   dependencies:
     readable-stream "^2.3.5"
     safe-buffer "^5.1.1"
@@ -1326,9 +1326,9 @@ rc@^1.2.7:
     strip-json-comments "~2.0.1"
 
 readable-stream@^2.0.0, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.3.0, readable-stream@^2.3.5, readable-stream@^2.3.6:
-  version "2.3.6"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
-  integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
+  version "2.3.7"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
+  integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.3"
@@ -1381,16 +1381,16 @@ rxjs@^6.5.2:
   dependencies:
     tslib "^1.9.0"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@~5.2.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
+
+safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
 
-safe-buffer@~5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
-  integrity sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg==
-
 semver@^5.4.1, semver@^5.5.0, semver@^5.7.0:
   version "5.7.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"