diff --git a/package.json b/package.json
index dc37d26..914b92e 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@babel/cli": "7.12.10",
     "@babel/core": "7.12.10",
     "@babel/polyfill": "7.12.1",
-    "@babel/preset-env": "7.12.10",
+    "@babel/preset-env": "7.12.11",
     "@babel/register": "7.12.10",
     "ava": "3.14.0",
     "coveralls": "3.1.0",
diff --git a/yarn.lock b/yarn.lock
index e41b6ed..48b36bf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -463,6 +463,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz#a78c7a7251e01f616512d31b10adcf52ada5e0d2"
   integrity sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw==
 
+"@babel/helper-validator-identifier@^7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.12.11.tgz#c9a1f021917dcb5ccf0d4e453e399022981fc9ed"
+  integrity sha512-np/lG3uARFybkoHokJUmf1QfEvRVCPbmQeUQpKow5cQ3xWrV9i3rUHodKDJPQfTVX61qKi+UdYk8kik84n7XOw==
+
 "@babel/helper-validator-identifier@^7.9.0", "@babel/helper-validator-identifier@^7.9.5":
   version "7.9.5"
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.9.5.tgz#90977a8e6fbf6b431a7dc31752eee233bf052d80"
@@ -473,6 +478,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.12.1.tgz#175567380c3e77d60ff98a54bb015fe78f2178d9"
   integrity sha512-YpJabsXlJVWP0USHjnC/AQDTLlZERbON577YUVO/wLpqyj6HAtVYnWaQaN0iUN+1/tWn3c+uKKXjRut5115Y2A==
 
+"@babel/helper-validator-option@^7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.12.11.tgz#d66cb8b7a3e7fe4c6962b32020a131ecf0847f4f"
+  integrity sha512-TBFCyj939mFSdeX7U7DDj32WtzYY7fDcalgq8v3fBZMNOJQNn7nOYzMaUCiPxPYfCup69mtIpqlKgMZLvQ8Xhw==
+
 "@babel/helper-wrap-function@^7.10.4":
   version "7.10.4"
   resolved "https://registry.yarnpkg.com/@babel/helper-wrap-function/-/helper-wrap-function-7.10.4.tgz#8a6f701eab0ff39f765b5a1cfef409990e624b87"
@@ -766,10 +776,10 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/plugin-transform-block-scoping@^7.12.1":
-  version "7.12.1"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.12.1.tgz#f0ee727874b42a208a48a586b84c3d222c2bbef1"
-  integrity sha512-zJyAC9sZdE60r1nVQHblcfCj29Dh2Y0DOvlMkcqSo0ckqjiCwNiUezUKw+RjOCwGfpLRwnAeQ2XlLpsnGkvv9w==
+"@babel/plugin-transform-block-scoping@^7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-block-scoping/-/plugin-transform-block-scoping-7.12.11.tgz#83ae92a104dbb93a7d6c6dd1844f351083c46b4f"
+  integrity sha512-atR1Rxc3hM+VPg/NvNvfYw0npQEAcHuJ+MGZnFn6h3bo+1U3BWXMdFMlvVRApBTWKQMX7SOwRJZA5FBF/JQbvA==
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
@@ -1008,16 +1018,16 @@
     core-js "^2.6.5"
     regenerator-runtime "^0.13.4"
 
-"@babel/preset-env@7.12.10":
-  version "7.12.10"
-  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.12.10.tgz#ca981b95f641f2610531bd71948656306905e6ab"
-  integrity sha512-Gz9hnBT/tGeTE2DBNDkD7BiWRELZt+8lSysHuDwmYXUIvtwZl0zI+D6mZgXZX0u8YBlLS4tmai9ONNY9tjRgRA==
+"@babel/preset-env@7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.12.11.tgz#55d5f7981487365c93dbbc84507b1c7215e857f9"
+  integrity sha512-j8Tb+KKIXKYlDBQyIOy4BLxzv1NUOwlHfZ74rvW+Z0Gp4/cI2IMDPBWAgWceGcE7aep9oL/0K9mlzlMGxA8yNw==
   dependencies:
     "@babel/compat-data" "^7.12.7"
     "@babel/helper-compilation-targets" "^7.12.5"
     "@babel/helper-module-imports" "^7.12.5"
     "@babel/helper-plugin-utils" "^7.10.4"
-    "@babel/helper-validator-option" "^7.12.1"
+    "@babel/helper-validator-option" "^7.12.11"
     "@babel/plugin-proposal-async-generator-functions" "^7.12.1"
     "@babel/plugin-proposal-class-properties" "^7.12.1"
     "@babel/plugin-proposal-dynamic-import" "^7.12.1"
@@ -1046,7 +1056,7 @@
     "@babel/plugin-transform-arrow-functions" "^7.12.1"
     "@babel/plugin-transform-async-to-generator" "^7.12.1"
     "@babel/plugin-transform-block-scoped-functions" "^7.12.1"
-    "@babel/plugin-transform-block-scoping" "^7.12.1"
+    "@babel/plugin-transform-block-scoping" "^7.12.11"
     "@babel/plugin-transform-classes" "^7.12.1"
     "@babel/plugin-transform-computed-properties" "^7.12.1"
     "@babel/plugin-transform-destructuring" "^7.12.1"
@@ -1076,7 +1086,7 @@
     "@babel/plugin-transform-unicode-escapes" "^7.12.1"
     "@babel/plugin-transform-unicode-regex" "^7.12.1"
     "@babel/preset-modules" "^0.1.3"
-    "@babel/types" "^7.12.10"
+    "@babel/types" "^7.12.11"
     core-js-compat "^3.8.0"
     semver "^5.5.0"
 
@@ -1247,6 +1257,15 @@
     lodash "^4.17.19"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.12.11.tgz#a86e4d71e30a9b6ee102590446c98662589283ce"
+  integrity sha512-ukA9SQtKThINm++CX1CwmliMrE54J6nIYB5XTwL5f/CLFW9owfls+YSU8tVW15RQ2w+a3fSbPjC6HdQNtWZkiA==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.12.11"
+    lodash "^4.17.19"
+    to-fast-properties "^2.0.0"
+
 "@babel/types@^7.12.5", "@babel/types@^7.12.7":
   version "7.12.7"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.12.7.tgz#6039ff1e242640a29452c9ae572162ec9a8f5d13"