diff --git a/packages/fuzzer/package.json b/packages/fuzzer/package.json
index 679648a2..b20cebba 100644
--- a/packages/fuzzer/package.json
+++ b/packages/fuzzer/package.json
@@ -12,6 +12,6 @@
     "ethers": "^5.3.0",
     "ts-node": "^9.0.0",
     "typescript": "~4.1.0",
-    "yargs": "^16.0.3"
+    "yargs": "^17.1.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index e3a93161..71ca22e4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -22550,7 +22550,7 @@ yargs@13.3.2, yargs@^13.3.0, yargs@^13.3.2:
     y18n "^4.0.0"
     yargs-parser "^13.1.2"
 
-yargs@16.2.0, yargs@^16.0.3, yargs@^16.2.0:
+yargs@16.2.0, yargs@^16.2.0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-16.2.0.tgz#1c82bf0f6b6a66eafce7ef30e376f49a12477f66"
   integrity sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==
@@ -22615,6 +22615,19 @@ yargs@^15.4.1:
     y18n "^4.0.0"
     yargs-parser "^18.1.2"
 
+yargs@^17.1.1:
+  version "17.1.1"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-17.1.1.tgz#c2a8091564bdb196f7c0a67c1d12e5b85b8067ba"
+  integrity sha512-c2k48R0PwKIqKhPMWjeiF6y2xY/gPMUlro0sgxqXpbOIohWiLNXWslsootttv7E1e73QPAMQSg5FeySbVcpsPQ==
+  dependencies:
+    cliui "^7.0.2"
+    escalade "^3.1.1"
+    get-caller-file "^2.0.5"
+    require-directory "^2.1.1"
+    string-width "^4.2.0"
+    y18n "^5.0.5"
+    yargs-parser "^20.2.2"
+
 yargs@^8.0.2:
   version "8.0.2"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-8.0.2.tgz#6299a9055b1cefc969ff7e79c1d918dceb22c360"