diff --git a/package.json b/package.json
index e9443bb5..d6b3be77 100644
--- a/package.json
+++ b/package.json
@@ -80,8 +80,8 @@
     "@aureooms/js-itertools": "4.1.0",
     "@aureooms/js-measure": "1.0.3",
     "@aureooms/js-predicate": "2.0.2",
-    "@babel/cli": "7.12.7",
-    "@babel/core": "7.12.7",
+    "@babel/cli": "7.12.8",
+    "@babel/core": "7.12.9",
     "@babel/preset-env": "7.12.7",
     "@babel/register": "7.12.1",
     "argparse": "2.0.1",
diff --git a/yarn.lock b/yarn.lock
index 98f10004..ee2191c1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -32,10 +32,10 @@
   resolved "https://registry.yarnpkg.com/@aureooms/js-predicate/-/js-predicate-2.0.2.tgz#0c09bfbd6616fdb9c2b8f9b894201e8807e810d9"
   integrity sha1-DAm/vWYW/bnCuPm4lCAeiAfoENk=
 
-"@babel/cli@7.12.7":
-  version "7.12.7"
-  resolved "https://registry.yarnpkg.com/@babel/cli/-/cli-7.12.7.tgz#63a3c38bddff02a1c633c70f2fd03019af6bf977"
-  integrity sha512-vE1fidQsaWnQVs4SItkuCdi3+uXqjbhw4cIKp8aawKxOnTnlvxYMzXSeMAqo6alldQRFQYb198YQfW0Sp1jl5Q==
+"@babel/cli@7.12.8":
+  version "7.12.8"
+  resolved "https://registry.yarnpkg.com/@babel/cli/-/cli-7.12.8.tgz#3b24ed2fd5da353ee6f19e8935ff8c93b5fe8430"
+  integrity sha512-/6nQj11oaGhLmZiuRUfxsujiPDc9BBReemiXgIbxc+M5W+MIiFKYwvNDJvBfnGKNsJTKbUfEheKc9cwoPHAVQA==
   dependencies:
     commander "^4.0.1"
     convert-source-map "^1.1.0"
@@ -61,10 +61,10 @@
   resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.12.7.tgz#9329b4782a7d6bbd7eef57e11addf91ee3ef1e41"
   integrity sha512-YaxPMGs/XIWtYqrdEOZOCPsVWfEoriXopnsz3/i7apYPXQ3698UFhS6dVT1KN5qOsWmVgw/FOrmQgpRaZayGsw==
 
-"@babel/core@7.12.7":
-  version "7.12.7"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.12.7.tgz#bf55363c08c8352a37691f7216ec30090bf7e3bf"
-  integrity sha512-tRKx9B53kJe8NCGGIxEQb2Bkr0riUIEuN7Sc1fxhs5H8lKlCWUvQCSNMVIB0Meva7hcbCRJ76de15KoLltdoqw==
+"@babel/core@7.12.9":
+  version "7.12.9"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.12.9.tgz#fd450c4ec10cdbb980e2928b7aa7a28484593fc8"
+  integrity sha512-gTXYh3M5wb7FRXQy+FErKFAv90BnlOuNn1QkCK2lREoPAjrQCO49+HVSrFoe5uakFAF5eenS75KbO2vQiLrTMQ==
   dependencies:
     "@babel/code-frame" "^7.10.4"
     "@babel/generator" "^7.12.5"
@@ -72,7 +72,7 @@
     "@babel/helpers" "^7.12.5"
     "@babel/parser" "^7.12.7"
     "@babel/template" "^7.12.7"
-    "@babel/traverse" "^7.12.7"
+    "@babel/traverse" "^7.12.9"
     "@babel/types" "^7.12.7"
     convert-source-map "^1.7.0"
     debug "^4.1.0"
@@ -933,7 +933,7 @@
     globals "^11.1.0"
     lodash "^4.17.19"
 
-"@babel/traverse@^7.12.5", "@babel/traverse@^7.12.7":
+"@babel/traverse@^7.12.5":
   version "7.12.7"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.12.7.tgz#572a722408681cef17d6b0bef69ef2e728ca69f1"
   integrity sha512-nMWaqsQEeSvMNypswUDzjqQ+0rR6pqCtoQpsqGJC4/Khm9cISwPTSpai57F6/jDaOoEGz8yE/WxcO3PV6tKSmQ==
@@ -948,6 +948,21 @@
     globals "^11.1.0"
     lodash "^4.17.19"
 
+"@babel/traverse@^7.12.9":
+  version "7.12.9"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.12.9.tgz#fad26c972eabbc11350e0b695978de6cc8e8596f"
+  integrity sha512-iX9ajqnLdoU1s1nHt36JDI9KG4k+vmI8WgjK5d+aDTwQbL2fUnzedNedssA645Ede3PM2ma1n8Q4h2ohwXgMXw==
+  dependencies:
+    "@babel/code-frame" "^7.10.4"
+    "@babel/generator" "^7.12.5"
+    "@babel/helper-function-name" "^7.10.4"
+    "@babel/helper-split-export-declaration" "^7.11.0"
+    "@babel/parser" "^7.12.7"
+    "@babel/types" "^7.12.7"
+    debug "^4.1.0"
+    globals "^11.1.0"
+    lodash "^4.17.19"
+
 "@babel/types@^7.10.4", "@babel/types@^7.10.5", "@babel/types@^7.11.0", "@babel/types@^7.12.1", "@babel/types@^7.4.4", "@babel/types@^7.7.0":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.12.1.tgz#e109d9ab99a8de735be287ee3d6a9947a190c4ae"