diff --git a/package.json b/package.json
index 2cb19509b..d5fb2817c 100644
--- a/package.json
+++ b/package.json
@@ -125,7 +125,7 @@
     "rollup-plugin-terser": "5.3.0",
     "sass": "^1.26.3",
     "sinon": "9.0.1",
-    "solc": "0.6.4",
+    "solc": "0.8.9",
     "solc4": "0.4.25",
     "stream": "0.0.2",
     "style-loader": "^1.1.3",
diff --git a/yarn.lock b/yarn.lock
index 21046c87d..dfe312f33 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4167,16 +4167,16 @@ commander@2, commander@^2.11.0, commander@^2.15.0, commander@^2.20.0, commander@
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
-commander@3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-3.0.2.tgz#6837c3fb677ad9933d1cfba42dd14d5117d6b39e"
-  integrity sha512-Gar0ASD4BDyKC4hl4DwHqDrmvjoxWKZigVnAbn5H1owvm4CxCPdb0HQDehwNYMJpla5+M2tPmPARzhtYuwpHow==
-
 commander@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-5.0.0.tgz#dbf1909b49e5044f8fdaf0adc809f0c0722bdfd0"
   integrity sha512-JrDGPAKjMGSP1G0DUoaceEJ3DZgAfr/q6X7FVk4+U5KxUSKviYGM2k6zWkfyyBHy5rAtzgYJFa1ro2O9PtoxwQ==
 
+commander@^8.1.0:
+  version "8.2.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-8.2.0.tgz#37fe2bde301d87d47a53adeff8b5915db1381ca8"
+  integrity sha512-LLKxDvHeL91/8MIyTAD5BFMNtoIwztGPMiM/7Bl8rIPmHCZXRxmSWr91h57dpOpnQ6jIUqEWdXE/uBYMfiVZDA==
+
 commander@~4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-4.1.1.tgz#9fd602bd936294e9e9ef46a3f4d6964044b18068"
@@ -6816,6 +6816,11 @@ follow-redirects@^1.0.0:
   dependencies:
     debug "^3.0.0"
 
+follow-redirects@^1.12.1:
+  version "1.14.4"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.14.4.tgz#838fdf48a8bbdd79e52ee51fb1c94e3ed98b9379"
+  integrity sha512-zwGkiSXC1MUJG/qmeIFH2HBJx9u0V46QGUe3YR1fXG8bXQxq7fLj0RjLZQ5nubr9qNJUZrH+xUcwXEoXNpfS+g==
+
 for-in@^0.1.4:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.8.tgz#d8773908e31256109952b1fdb9b3fa867d2775e1"
@@ -14645,13 +14650,14 @@ solc4@0.4.25:
     semver "^5.3.0"
     yargs "^4.7.1"
 
-solc@0.6.4:
-  version "0.6.4"
-  resolved "https://registry.yarnpkg.com/solc/-/solc-0.6.4.tgz#4b0f11fccd6f5ef9802c6bb1c007abb16881c2ca"
-  integrity sha512-HjUCys7ue9n7lGCa1XNf+wDdEY/wY64CpwnD4iPxW+BYYUX6ytwWXKitoolPXOOVxq4jewvwtL7Pngs+5k954A==
+solc@0.8.9:
+  version "0.8.9"
+  resolved "https://registry.yarnpkg.com/solc/-/solc-0.8.9.tgz#e57eb1c65c1eea273cc9b2b0d6cca051b878cbf8"
+  integrity sha512-dD8tQgGCrdWQPpbDTbQF048S3JAcpytOax2r5qPgQluKJPCRFT6c/fec0ZkbrRwRSeYT/qiKz0OKBDOinnGeWw==
   dependencies:
     command-exists "^1.2.8"
-    commander "3.0.2"
+    commander "^8.1.0"
+    follow-redirects "^1.12.1"
     fs-extra "^0.30.0"
     js-sha3 "0.8.0"
     memorystream "^0.3.1"