diff --git a/package-lock.json b/package-lock.json
index a4ebb97..42d14e3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,6 +22,7 @@
                 "@ava/typescript": "^3.0.1",
                 "@changesets/cli": "^2.27.7",
                 "@codspeed/tinybench-plugin": "^3.1.1",
+                "@fast-check/ava": "^2.0.0",
                 "@tsconfig/node12": "^12.1.3",
                 "@types/command-line-usage": "^5.0.4",
                 "@types/minimist": "^1.2.5",
@@ -670,6 +671,28 @@
                 "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
             }
         },
+        "node_modules/@fast-check/ava": {
+            "version": "2.0.0",
+            "resolved": "https://registry.npmjs.org/@fast-check/ava/-/ava-2.0.0.tgz",
+            "integrity": "sha512-3AEjylUuIQmtQ9pECxcRopigxSMB0jDuR0MOROQXEAYA+k3u2JphSstQuDapQQVdSJCZAdLT/aKvPgD+vUqMbg==",
+            "dev": true,
+            "funding": [
+                {
+                    "type": "individual",
+                    "url": "https://github.com/sponsors/dubzzz"
+                },
+                {
+                    "type": "opencollective",
+                    "url": "https://opencollective.com/fast-check"
+                }
+            ],
+            "dependencies": {
+                "fast-check": "^3.0.0"
+            },
+            "peerDependencies": {
+                "ava": "^4 || ^5 || ^6"
+            }
+        },
         "node_modules/@humanwhocodes/config-array": {
             "version": "0.11.14",
             "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.11.14.tgz",
@@ -3058,6 +3081,28 @@
                 "node": ">=0.6.0"
             }
         },
+        "node_modules/fast-check": {
+            "version": "3.20.0",
+            "resolved": "https://registry.npmjs.org/fast-check/-/fast-check-3.20.0.tgz",
+            "integrity": "sha512-pZIjqLpOZgdSLecec4GKC3Zq5702MZ34upMKxojnNVSWA0K64V3pXOBT1Wdsrc3AphLtzRBbsi8bRWF4TUGmUg==",
+            "dev": true,
+            "funding": [
+                {
+                    "type": "individual",
+                    "url": "https://github.com/sponsors/dubzzz"
+                },
+                {
+                    "type": "opencollective",
+                    "url": "https://opencollective.com/fast-check"
+                }
+            ],
+            "dependencies": {
+                "pure-rand": "^6.1.0"
+            },
+            "engines": {
+                "node": ">=8.0.0"
+            }
+        },
         "node_modules/fast-deep-equal": {
             "version": "3.1.3",
             "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -5037,6 +5082,22 @@
                 "node": ">=6"
             }
         },
+        "node_modules/pure-rand": {
+            "version": "6.1.0",
+            "resolved": "https://registry.npmjs.org/pure-rand/-/pure-rand-6.1.0.tgz",
+            "integrity": "sha512-bVWawvoZoBYpp6yIoQtQXHZjmz35RSVHnUOTefl8Vcjr8snTPY1wnpSPMWekcFwbxI6gtmT7rSYPFvz71ldiOA==",
+            "dev": true,
+            "funding": [
+                {
+                    "type": "individual",
+                    "url": "https://github.com/sponsors/dubzzz"
+                },
+                {
+                    "type": "opencollective",
+                    "url": "https://opencollective.com/fast-check"
+                }
+            ]
+        },
         "node_modules/queue-microtask": {
             "version": "1.2.3",
             "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -6846,6 +6907,15 @@
             "integrity": "sha512-Ys+3g2TaW7gADOJzPt83SJtCDhMjndcDMFVQ/Tj9iA1BfJzFKD9mAUXT3OenpuPHbI6P/myECxRJrofUsDx/5g==",
             "dev": true
         },
+        "@fast-check/ava": {
+            "version": "2.0.0",
+            "resolved": "https://registry.npmjs.org/@fast-check/ava/-/ava-2.0.0.tgz",
+            "integrity": "sha512-3AEjylUuIQmtQ9pECxcRopigxSMB0jDuR0MOROQXEAYA+k3u2JphSstQuDapQQVdSJCZAdLT/aKvPgD+vUqMbg==",
+            "dev": true,
+            "requires": {
+                "fast-check": "^3.0.0"
+            }
+        },
         "@humanwhocodes/config-array": {
             "version": "0.11.14",
             "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.11.14.tgz",
@@ -8555,6 +8625,15 @@
                 }
             }
         },
+        "fast-check": {
+            "version": "3.20.0",
+            "resolved": "https://registry.npmjs.org/fast-check/-/fast-check-3.20.0.tgz",
+            "integrity": "sha512-pZIjqLpOZgdSLecec4GKC3Zq5702MZ34upMKxojnNVSWA0K64V3pXOBT1Wdsrc3AphLtzRBbsi8bRWF4TUGmUg==",
+            "dev": true,
+            "requires": {
+                "pure-rand": "^6.1.0"
+            }
+        },
         "fast-deep-equal": {
             "version": "3.1.3",
             "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -9972,6 +10051,12 @@
             "integrity": "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==",
             "dev": true
         },
+        "pure-rand": {
+            "version": "6.1.0",
+            "resolved": "https://registry.npmjs.org/pure-rand/-/pure-rand-6.1.0.tgz",
+            "integrity": "sha512-bVWawvoZoBYpp6yIoQtQXHZjmz35RSVHnUOTefl8Vcjr8snTPY1wnpSPMWekcFwbxI6gtmT7rSYPFvz71ldiOA==",
+            "dev": true
+        },
         "queue-microtask": {
             "version": "1.2.3",
             "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
diff --git a/package.json b/package.json
index 87ab3b8..708c842 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,7 @@
         "@ava/typescript": "^3.0.1",
         "@changesets/cli": "^2.27.7",
         "@codspeed/tinybench-plugin": "^3.1.1",
+        "@fast-check/ava": "^2.0.0",
         "@tsconfig/node12": "^12.1.3",
         "@types/command-line-usage": "^5.0.4",
         "@types/minimist": "^1.2.5",
diff --git a/src/__tests__/cli/parseArgs.test.ts b/src/__tests__/cli/parseArgs.test.ts
index a71b36e..20c2193 100644
--- a/src/__tests__/cli/parseArgs.test.ts
+++ b/src/__tests__/cli/parseArgs.test.ts
@@ -1,3 +1,4 @@
+import { fc, testProp } from "@fast-check/ava";
 import test from "ava";
 
 import { getUsage, parseArgs } from "../../cli/parseArgs.js";
@@ -12,29 +13,46 @@ const macro = test.macro<[string[]]>({
     },
 });
 
-test(macro, []);
-test(macro, ["--help"]);
-test(macro, ["-h"]);
-test(macro, ["--tasks"]);
-test(macro, ["--tasks", "true"]);
-test(macro, ["--tasks=true"]);
-test(macro, ["--tasks", "TRUE"]);
-test(macro, ["--tasks", "yes"]);
-test(macro, ["--tasks", "1"]);
-test(macro, ["--tasks", "false"]);
-test(macro, ["--tasks=false"]);
-test(macro, ["--tasks", "FALSE"]);
-test(macro, ["--tasks", "0"]);
-test(macro, ["-T"]);
-test(macro, ["-T", "true"]);
-test(macro, ["-T", "false"]);
-test(macro, ["--tasks-simple"]);
-test(macro, ["--tasks-simple", "true"]);
-test(macro, ["build", "test", "--light=false"]);
-test(macro, ["build", "test", "--", "--light=false"]);
-test(macro, ["build", "test", "--", "not-a-task", "--light=false"]);
-test(macro, ["--herebyfile", "path/to/Herebyfile.js", "build", "test", "--light=false"]);
-test(macro, ["--herebyfile", "path/to/Herebyfile.js", "build", "test", "--light=false", "not-a-task"]);
+const argvTests = [
+    [],
+    ["--help"],
+    ["-h"],
+    ["--tasks"],
+    ["--tasks", "true"],
+    ["--tasks=true"],
+    ["--tasks", "TRUE"],
+    ["--tasks", "yes"],
+    ["--tasks", "1"],
+    ["--tasks", "false"],
+    ["--tasks=false"],
+    ["--tasks", "FALSE"],
+    ["--tasks", "0"],
+    ["-T"],
+    ["-T", "true"],
+    ["-T", "false"],
+    ["--tasks-simple"],
+    ["--tasks-simple", "true"],
+    ["build", "test", "--light=false"],
+    ["build", "test", "--", "--light=false"],
+    ["build", "test", "--", "not-a-task", "--light=false"],
+    ["--herebyfile", "path/to/Herebyfile.js", "build", "test", "--light=false"],
+    ["--herebyfile", "path/to/Herebyfile.js", "build", "test", "--light=false", "not-a-task"],
+];
+
+for (const argv of argvTests) {
+    test(macro, argv);
+}
+
+testProp(
+    "fast-check",
+    [fc.array(fc.string())],
+    (t, argv) => {
+        t.true(typeof parseArgs(argv) === "object");
+    },
+    {
+        examples: argvTests.map((v) => [v]),
+    },
+);
 
 test.serial("usage", (t) => {
     t.snapshot(getUsage().replace(/\r/g, ""));