diff --git a/package.json b/package.json
index 74981ed..c6ce36e 100644
--- a/package.json
+++ b/package.json
@@ -82,9 +82,9 @@
     "@aureooms/js-functools": "2.0.3",
     "@aureooms/js-itertools": "4.1.0",
     "@babel/cli": "7.13.0",
-    "@babel/core": "7.13.1",
+    "@babel/core": "7.13.8",
     "@babel/preset-env": "7.13.5",
-    "@babel/register": "7.13.0",
+    "@babel/register": "7.13.8",
     "ava": "3.15.0",
     "babel-plugin-transform-remove-console": "6.9.4",
     "babel-plugin-unassert": "3.0.1",
diff --git a/yarn.lock b/yarn.lock
index cc6e110..25115b7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -73,17 +73,22 @@
   resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.13.5.tgz#1e3b9043df6e3f5cfa750854adeb0c7a222d15a8"
   integrity sha512-+c3G3S8n5ziRyfLybmgm9Y6KgoCni+s0hkV0I5bIpGWhu8uqEQo/VGnETY8YS6PFwedAoXOqfe4FhrvbtsLu+Q==
 
-"@babel/core@7.13.1":
-  version "7.13.1"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.13.1.tgz#7ddd027176debe40f13bb88bac0c21218c5b1ecf"
-  integrity sha512-FzeKfFBG2rmFtGiiMdXZPFt/5R5DXubVi82uYhjGX4Msf+pgYQMCFIqFXZWs5vbIYbf14VeBIgdGI03CDOOM1w==
+"@babel/compat-data@^7.13.8":
+  version "7.13.8"
+  resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.13.8.tgz#5b783b9808f15cef71547f1b691f34f8ff6003a6"
+  integrity sha512-EaI33z19T4qN3xLXsGf48M2cDqa6ei9tPZlfLdb2HC+e/cFtREiRd8hdSqDbwdLB0/+gLwqJmCYASH0z2bUdog==
+
+"@babel/core@7.13.8":
+  version "7.13.8"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.13.8.tgz#c191d9c5871788a591d69ea1dc03e5843a3680fb"
+  integrity sha512-oYapIySGw1zGhEFRd6lzWNLWFX2s5dA/jm+Pw/+59ZdXtjyIuwlXbrId22Md0rgZVop+aVoqow2riXhBLNyuQg==
   dependencies:
     "@babel/code-frame" "^7.12.13"
     "@babel/generator" "^7.13.0"
-    "@babel/helper-compilation-targets" "^7.13.0"
+    "@babel/helper-compilation-targets" "^7.13.8"
     "@babel/helper-module-transforms" "^7.13.0"
     "@babel/helpers" "^7.13.0"
-    "@babel/parser" "^7.13.0"
+    "@babel/parser" "^7.13.4"
     "@babel/template" "^7.12.13"
     "@babel/traverse" "^7.13.0"
     "@babel/types" "^7.13.0"
@@ -92,7 +97,7 @@
     gensync "^1.0.0-beta.2"
     json5 "^2.1.2"
     lodash "^4.17.19"
-    semver "7.0.0"
+    semver "^6.3.0"
     source-map "^0.5.0"
 
 "@babel/core@^7.7.5":
@@ -176,6 +181,16 @@
     browserslist "^4.14.5"
     semver "7.0.0"
 
+"@babel/helper-compilation-targets@^7.13.8":
+  version "7.13.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-compilation-targets/-/helper-compilation-targets-7.13.8.tgz#02bdb22783439afb11b2f009814bdd88384bd468"
+  integrity sha512-pBljUGC1y3xKLn1nrx2eAhurLMA8OqBtBP/JwG4U8skN7kf8/aqwwxpV1N6T0e7r6+7uNitIa/fUxPFagSXp3A==
+  dependencies:
+    "@babel/compat-data" "^7.13.8"
+    "@babel/helper-validator-option" "^7.12.17"
+    browserslist "^4.14.5"
+    semver "^6.3.0"
+
 "@babel/helper-create-class-features-plugin@^7.13.0":
   version "7.13.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.13.0.tgz#28d04ad9cfbd1ed1d8b988c9ea7b945263365846"
@@ -522,6 +537,11 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.13.0.tgz#49b9b6ee213e5634fa80361dae139effef893f78"
   integrity sha512-w80kxEMFhE3wjMOQkfdTvv0CSdRSJZptIlLhU4eU/coNJeWjduspUFz+IRnBbAq6m5XYBFMoT1TNkk9K9yf10g==
 
+"@babel/parser@^7.13.4":
+  version "7.13.4"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.13.4.tgz#340211b0da94a351a6f10e63671fa727333d13ab"
+  integrity sha512-uvoOulWHhI+0+1f9L4BoozY7U5cIkZ9PgJqvb041d6vypgUmtVPG4vmGm4pSggjl8BELzvHyUeJSUyEMY6b+qA==
+
 "@babel/plugin-proposal-async-generator-functions@^7.13.5":
   version "7.13.5"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-async-generator-functions/-/plugin-proposal-async-generator-functions-7.13.5.tgz#69e3fbb9958949b09036e27b26eba1aafa1ba3db"
@@ -1062,10 +1082,10 @@
     "@babel/types" "^7.4.4"
     esutils "^2.0.2"
 
-"@babel/register@7.13.0":
-  version "7.13.0"
-  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.13.0.tgz#865eb78a3ed94c6ad72d0e550180b3d6566dfb8d"
-  integrity sha512-nswFANDBcO661RvGOHfVKVRBZIe9wJuFFIJYJWpO8LwYn8WI+h/2JZhceLvlxjxEvMH6/oGkEBgz5SnqUUMkCg==
+"@babel/register@7.13.8":
+  version "7.13.8"
+  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.13.8.tgz#d9051dc6820cb4e86375cc0e2d55a4862b31184f"
+  integrity sha512-yCVtABcmvQjRsX2elcZFUV5Q5kDDpHdtXKKku22hNDma60lYuhKmtp1ykZ/okRCPLT2bR5S+cA1kvtBdAFlDTQ==
   dependencies:
     find-cache-dir "^2.0.0"
     lodash "^4.17.19"