diff --git a/yarn.lock b/yarn.lock
index 2dca54a..7669b9f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -488,8 +488,8 @@ bit-mask@^1.0.1:
     array-events "^0.2.0"
 
 bl@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/bl/-/bl-3.0.0.tgz#3611ec00579fd18561754360b21e9f784500ff88"
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-3.0.1.tgz#1cbb439299609e419b5a74d7fce2f8b37d8e5c6f"
   dependencies:
     readable-stream "^3.0.1"
 
@@ -2896,8 +2896,8 @@ readable-stream@2, readable-stream@~2.3.6:
     util-deprecate "~1.0.1"
 
 readable-stream@^3.0.1, readable-stream@^3.1.1:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.4.0.tgz#a51c26754658e0a3c21dbf59163bd45ba6f447fc"
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.6.0.tgz#337bbda3adc0706bd3e024426a286d4b4b2c9198"
   dependencies:
     inherits "^2.0.3"
     string_decoder "^1.1.1"
@@ -3017,7 +3017,7 @@ rxjs@^6.4.0, rxjs@^6.5.2:
   dependencies:
     tslib "^1.9.0"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.2, safe-buffer@~5.2.0:
+safe-buffer@^5.0.1, safe-buffer@^5.1.2:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
 
@@ -3025,6 +3025,10 @@ 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"
 
+safe-buffer@~5.2.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+
 "safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"