diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 39440a7..ad59b19 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,9 +10,5 @@ jobs:
         with:
           node-version: 18
           cache: npm
-      - name: Install playwright browsers
-        run: npx playwright install --with-deps
-      - name: Run tests
-        run: npx playwright test
       - run: npm ci
       - run: npm test
diff --git a/README.md b/README.md
index 2b8b3bd..445691c 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ const { githubAppJwt } = require("universal-github-app-jwt");
 (async () => {
   const { token, appId, expiration } = await githubAppJwt({
     id: APP_ID,
-    privateKey: PRIVATE_KEY
+    privateKey: PRIVATE_KEY,
   });
 })();
 ```
@@ -78,8 +78,8 @@ The retrieved `token` can now be used in Authorization request header, e.g. with
 ```js
 request("GET /app", {
   headers: {
-    authorization: `bearer ${token}`
-  }
+    authorization: `bearer ${token}`,
+  },
 });
 ```
 
diff --git a/package-lock.json b/package-lock.json
index ee15b40..61cfe78 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,8 +9,8 @@
       "version": "0.0.0-development",
       "license": "MIT",
       "dependencies": {
-        "@types/jsonwebtoken": "^8.3.3",
-        "jsonwebtoken": "^8.5.1"
+        "@types/jsonwebtoken": "^9.0.0",
+        "jsonwebtoken": "^9.0.0"
       },
       "devDependencies": {
         "@gr2m/pika-plugin-build-web": "^0.6.0-issue-84.1",
@@ -22,7 +22,6 @@
         "@types/lolex": "^5.1.0",
         "jest": "^26.0.0",
         "lolex": "^6.0.0",
-        "playwright": "^1.0.1",
         "prettier": "^2.0.0",
         "rollup-plugin-json": "^4.0.0",
         "semantic-release": "^17.0.0",
@@ -3204,9 +3203,9 @@
       }
     },
     "node_modules/@types/jsonwebtoken": {
-      "version": "8.5.9",
-      "resolved": "https://registry.npmjs.org/@types/jsonwebtoken/-/jsonwebtoken-8.5.9.tgz",
-      "integrity": "sha512-272FMnFGzAVMGtu9tkr29hRL6bZj4Zs1KZNeHLnKqAvp06tAIcarTMwOh8/8bz4FmKRcMxZhZNeUAQsNLoiPhg==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@types/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz",
+      "integrity": "sha512-mM4TkDpA9oixqg1Fv2vVpOFyIVLJjm5x4k0V+K/rEsizfjD7Tk7LKk3GTtbB7KCfP0FEHQtsZqFxYA0+sijNVg==",
       "dependencies": {
         "@types/node": "*"
       }
@@ -9508,34 +9507,50 @@
       }
     },
     "node_modules/jsonwebtoken": {
-      "version": "8.5.1",
-      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
-      "integrity": "sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz",
+      "integrity": "sha512-tuGfYXxkQGDPnLJ7SibiQgVgeDgfbPq2k2ICcbgqW8WxWLBAxKQM/ZCu/IT8SOSwmaYl4dpTFCW5xZv7YbbWUw==",
       "dependencies": {
         "jws": "^3.2.2",
-        "lodash.includes": "^4.3.0",
-        "lodash.isboolean": "^3.0.3",
-        "lodash.isinteger": "^4.0.4",
-        "lodash.isnumber": "^3.0.3",
-        "lodash.isplainobject": "^4.0.6",
-        "lodash.isstring": "^4.0.1",
-        "lodash.once": "^4.0.0",
+        "lodash": "^4.17.21",
         "ms": "^2.1.1",
-        "semver": "^5.6.0"
+        "semver": "^7.3.8"
       },
       "engines": {
-        "node": ">=4",
-        "npm": ">=1.4.28"
+        "node": ">=12",
+        "npm": ">=6"
+      }
+    },
+    "node_modules/jsonwebtoken/node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
       }
     },
     "node_modules/jsonwebtoken/node_modules/semver": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+      "version": "7.3.8",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
+      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "dependencies": {
+        "lru-cache": "^6.0.0"
+      },
       "bin": {
-        "semver": "bin/semver"
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
       }
     },
+    "node_modules/jsonwebtoken/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+    },
     "node_modules/jwa": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.1.tgz",
@@ -9898,8 +9913,7 @@
     "node_modules/lodash": {
       "version": "4.17.21",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
-      "dev": true
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "node_modules/lodash.capitalize": {
       "version": "4.2.1",
@@ -9919,46 +9933,23 @@
       "integrity": "sha512-TM9YBvyC84ZxE3rgfefxUWiQKLilstD6k7PTGt6wfbtXF8ixIJLOL3VYyV/z+ZiPLsVxAsKAFVwWlWeb2Y8Yyw==",
       "dev": true
     },
-    "node_modules/lodash.includes": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
-      "integrity": "sha512-W3Bx6mdkRTGtlJISOvVD/lbqjTlPPUDTMnlXZFnVwi9NKJ6tiAk6LVdlhZMm17VZisqhKcgzpO5Wz91PCt5b0w=="
-    },
-    "node_modules/lodash.isboolean": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
-      "integrity": "sha512-Bz5mupy2SVbPHURB98VAcw+aHh4vRV5IPNhILUCsOzRmsTmSQ17jIuqopAentWoehktxGd9e/hbIXq980/1QJg=="
-    },
-    "node_modules/lodash.isinteger": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
-      "integrity": "sha512-DBwtEWN2caHQ9/imiNeEA5ys1JoRtRfY3d7V9wkqtbycnAmTvRRmbHKDV4a0EYc678/dia0jrte4tjYwVBaZUA=="
-    },
     "node_modules/lodash.ismatch": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/lodash.ismatch/-/lodash.ismatch-4.4.0.tgz",
       "integrity": "sha512-fPMfXjGQEV9Xsq/8MTSgUf255gawYRbjwMyDbcvDhXgV7enSZA0hynz6vMPnpAb5iONEzBHBPsT+0zes5Z301g==",
       "dev": true
     },
-    "node_modules/lodash.isnumber": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
-      "integrity": "sha512-QYqzpfwO3/CWf3XP+Z+tkQsfaLL/EnUlXWVkIk5FUPc4sBdTehEqZONuyRt2P67PXAk+NXmTBcc97zw9t1FQrw=="
-    },
     "node_modules/lodash.isplainobject": {
       "version": "4.0.6",
       "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
-      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA=="
+      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA==",
+      "dev": true
     },
     "node_modules/lodash.isstring": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
-      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw=="
-    },
-    "node_modules/lodash.once": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
-      "integrity": "sha512-Sb487aTOCr9drQVL8pIxOzVhafOjZN9UU54hiN8PU3uAiSV7lx1yYNpbNmex2PK6dSJoNTSJUUswT651yww3Mg=="
+      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw==",
+      "dev": true
     },
     "node_modules/lodash.uniqby": {
       "version": "4.7.0",
@@ -14586,34 +14577,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/playwright": {
-      "version": "1.29.1",
-      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.29.1.tgz",
-      "integrity": "sha512-lasC+pMqsQ2uWhNurt3YK3xo0gWlMjslYUylKbHcqF/NTjwp9KStRGO7S6wwz2f52GcSnop8XUK/GymJjdzrxw==",
-      "dev": true,
-      "hasInstallScript": true,
-      "dependencies": {
-        "playwright-core": "1.29.1"
-      },
-      "bin": {
-        "playwright": "cli.js"
-      },
-      "engines": {
-        "node": ">=14"
-      }
-    },
-    "node_modules/playwright-core": {
-      "version": "1.29.1",
-      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.29.1.tgz",
-      "integrity": "sha512-20Ai3d+lMkWpI9YZYlxk8gxatfgax5STW8GaMozAHwigLiyiKQrdkt7gaoT9UQR8FIVDg6qVXs9IoZUQrDjIIg==",
-      "dev": true,
-      "bin": {
-        "playwright": "cli.js"
-      },
-      "engines": {
-        "node": ">=14"
-      }
-    },
     "node_modules/posix-character-classes": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/posix-character-classes/-/posix-character-classes-0.1.1.tgz",
@@ -20741,9 +20704,9 @@
       }
     },
     "@types/jsonwebtoken": {
-      "version": "8.5.9",
-      "resolved": "https://registry.npmjs.org/@types/jsonwebtoken/-/jsonwebtoken-8.5.9.tgz",
-      "integrity": "sha512-272FMnFGzAVMGtu9tkr29hRL6bZj4Zs1KZNeHLnKqAvp06tAIcarTMwOh8/8bz4FmKRcMxZhZNeUAQsNLoiPhg==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@types/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz",
+      "integrity": "sha512-mM4TkDpA9oixqg1Fv2vVpOFyIVLJjm5x4k0V+K/rEsizfjD7Tk7LKk3GTtbB7KCfP0FEHQtsZqFxYA0+sijNVg==",
       "requires": {
         "@types/node": "*"
       }
@@ -25570,26 +25533,36 @@
       }
     },
     "jsonwebtoken": {
-      "version": "8.5.1",
-      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
-      "integrity": "sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz",
+      "integrity": "sha512-tuGfYXxkQGDPnLJ7SibiQgVgeDgfbPq2k2ICcbgqW8WxWLBAxKQM/ZCu/IT8SOSwmaYl4dpTFCW5xZv7YbbWUw==",
       "requires": {
         "jws": "^3.2.2",
-        "lodash.includes": "^4.3.0",
-        "lodash.isboolean": "^3.0.3",
-        "lodash.isinteger": "^4.0.4",
-        "lodash.isnumber": "^3.0.3",
-        "lodash.isplainobject": "^4.0.6",
-        "lodash.isstring": "^4.0.1",
-        "lodash.once": "^4.0.0",
+        "lodash": "^4.17.21",
         "ms": "^2.1.1",
-        "semver": "^5.6.0"
+        "semver": "^7.3.8"
       },
       "dependencies": {
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
         "semver": {
-          "version": "5.7.1",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
+          "version": "7.3.8",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
+          "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
         }
       }
     },
@@ -25879,8 +25852,7 @@
     "lodash": {
       "version": "4.17.21",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
-      "dev": true
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "lodash.capitalize": {
       "version": "4.2.1",
@@ -25900,46 +25872,23 @@
       "integrity": "sha512-TM9YBvyC84ZxE3rgfefxUWiQKLilstD6k7PTGt6wfbtXF8ixIJLOL3VYyV/z+ZiPLsVxAsKAFVwWlWeb2Y8Yyw==",
       "dev": true
     },
-    "lodash.includes": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
-      "integrity": "sha512-W3Bx6mdkRTGtlJISOvVD/lbqjTlPPUDTMnlXZFnVwi9NKJ6tiAk6LVdlhZMm17VZisqhKcgzpO5Wz91PCt5b0w=="
-    },
-    "lodash.isboolean": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
-      "integrity": "sha512-Bz5mupy2SVbPHURB98VAcw+aHh4vRV5IPNhILUCsOzRmsTmSQ17jIuqopAentWoehktxGd9e/hbIXq980/1QJg=="
-    },
-    "lodash.isinteger": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
-      "integrity": "sha512-DBwtEWN2caHQ9/imiNeEA5ys1JoRtRfY3d7V9wkqtbycnAmTvRRmbHKDV4a0EYc678/dia0jrte4tjYwVBaZUA=="
-    },
     "lodash.ismatch": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/lodash.ismatch/-/lodash.ismatch-4.4.0.tgz",
       "integrity": "sha512-fPMfXjGQEV9Xsq/8MTSgUf255gawYRbjwMyDbcvDhXgV7enSZA0hynz6vMPnpAb5iONEzBHBPsT+0zes5Z301g==",
       "dev": true
     },
-    "lodash.isnumber": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
-      "integrity": "sha512-QYqzpfwO3/CWf3XP+Z+tkQsfaLL/EnUlXWVkIk5FUPc4sBdTehEqZONuyRt2P67PXAk+NXmTBcc97zw9t1FQrw=="
-    },
     "lodash.isplainobject": {
       "version": "4.0.6",
       "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
-      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA=="
+      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA==",
+      "dev": true
     },
     "lodash.isstring": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
-      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw=="
-    },
-    "lodash.once": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
-      "integrity": "sha512-Sb487aTOCr9drQVL8pIxOzVhafOjZN9UU54hiN8PU3uAiSV7lx1yYNpbNmex2PK6dSJoNTSJUUswT651yww3Mg=="
+      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw==",
+      "dev": true
     },
     "lodash.uniqby": {
       "version": "4.7.0",
@@ -29351,21 +29300,6 @@
         "find-up": "^4.0.0"
       }
     },
-    "playwright": {
-      "version": "1.29.1",
-      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.29.1.tgz",
-      "integrity": "sha512-lasC+pMqsQ2uWhNurt3YK3xo0gWlMjslYUylKbHcqF/NTjwp9KStRGO7S6wwz2f52GcSnop8XUK/GymJjdzrxw==",
-      "dev": true,
-      "requires": {
-        "playwright-core": "1.29.1"
-      }
-    },
-    "playwright-core": {
-      "version": "1.29.1",
-      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.29.1.tgz",
-      "integrity": "sha512-20Ai3d+lMkWpI9YZYlxk8gxatfgax5STW8GaMozAHwigLiyiKQrdkt7gaoT9UQR8FIVDg6qVXs9IoZUQrDjIIg==",
-      "dev": true
-    },
     "posix-character-classes": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/posix-character-classes/-/posix-character-classes-0.1.1.tgz",
diff --git a/package.json b/package.json
index f1df838..a181d8e 100644
--- a/package.json
+++ b/package.json
@@ -20,8 +20,7 @@
   "homepage": "https://github.com/gr2m/universal-github-app-jwt#readme",
   "scripts": {
     "build": "pika build",
-    "test": "npm run test:node && npm run test:browser",
-    "test:node": "jest test/node.test.ts  --coverage",
+    "test": "jest test/node.test.ts  --coverage",
     "pretest:browser": "npm run -s build",
     "test:browser": "node test/browser.test.js",
     "lint": "prettier --check '{src,test}/**/*' README.md package.json",
@@ -29,8 +28,8 @@
   },
   "license": "MIT",
   "dependencies": {
-    "@types/jsonwebtoken": "^8.3.3",
-    "jsonwebtoken": "^8.5.1"
+    "@types/jsonwebtoken": "^9.0.0",
+    "jsonwebtoken": "^9.0.0"
   },
   "devDependencies": {
     "@gr2m/pika-plugin-build-web": "^0.6.0-issue-84.1",
@@ -42,7 +41,6 @@
     "@types/lolex": "^5.1.0",
     "jest": "^26.0.0",
     "lolex": "^6.0.0",
-    "playwright": "^1.0.1",
     "prettier": "^2.0.0",
     "rollup-plugin-json": "^4.0.0",
     "semantic-release": "^17.0.0",
diff --git a/src/get-token-browser.ts b/src/get-token-browser.ts
index 056d966..6b5c1b2 100644
--- a/src/get-token-browser.ts
+++ b/src/get-token-browser.ts
@@ -3,12 +3,12 @@ import {
   getEncodedMessage,
   getDERfromPEM,
   string2ArrayBuffer,
-  base64encode
+  base64encode,
 } from "./utils";
 
 export const getToken = async ({
   privateKey,
-  payload
+  payload,
 }: GetTokenOptions): Promise<Token> => {
   // WebCrypto only supports PKCS#8, unfortunately
   if (/BEGIN RSA PRIVATE KEY/.test(privateKey)) {
@@ -19,7 +19,7 @@ export const getToken = async ({
 
   const algorithm = {
     name: "RSASSA-PKCS1-v1_5",
-    hash: { name: "SHA-256" }
+    hash: { name: "SHA-256" },
   };
   const header = { alg: "RS256", typ: "JWT" };
 
diff --git a/src/get-token.ts b/src/get-token.ts
index 5d77fe1..5402c2b 100644
--- a/src/get-token.ts
+++ b/src/get-token.ts
@@ -4,9 +4,9 @@ import { GetTokenOptions, Token } from "./types";
 
 export async function getToken({
   privateKey,
-  payload
+  payload,
 }: GetTokenOptions): Promise<Token> {
   return jsonwebtoken.sign(payload, privateKey, {
-    algorithm: "RS256"
+    algorithm: "RS256",
   });
 }
diff --git a/src/index.ts b/src/index.ts
index 93d0e9a..6d123ae 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -11,23 +11,23 @@ export async function githubAppJwt({
   // in the past as we have seen people running situations where the GitHub API
   // claimed the iat would be in future. It turned out the clocks on the
   // different machine were not in sync.
-  const nowWithSafetyMargin = now - 30
+  const nowWithSafetyMargin = now - 30;
   const expiration = nowWithSafetyMargin + 60 * 10; // JWT expiration time (10 minute maximum)
 
   const payload = {
     iat: nowWithSafetyMargin, // Issued at time
     exp: expiration,
-    iss: id
+    iss: id,
   };
 
   const token = await getToken({
     privateKey,
-    payload
+    payload,
   });
 
   return {
     appId: id,
     expiration,
-    token
+    token,
   };
 }
diff --git a/src/utils.ts b/src/utils.ts
index 9d2b526..e3bb59e 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -34,10 +34,7 @@ export function base64encode(buffer: ArrayBuffer): string {
 }
 
 function fromBase64(base64: string): string {
-  return base64
-    .replace(/=/g, "")
-    .replace(/\+/g, "-")
-    .replace(/\//g, "_");
+  return base64.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_");
 }
 
 function base64encodeJSON(obj: object) {
diff --git a/test/browser.test.html b/test/browser.test.html
index 81a96f6..3abbc39 100644
--- a/test/browser.test.html
+++ b/test/browser.test.html
@@ -5,9 +5,7 @@
     <title>Test</title>
   </head>
   <body>
-    <p>
-      see logs in developer console
-    </p>
+    <p>see logs in developer console</p>
     <script src="../node_modules/lolex/lolex.js"></script>
     <script type="module">
       (async () => {
@@ -86,7 +84,7 @@
 
         const result = await githubAppJwt({
           id: APP_ID,
-          privateKey: PRIVATE_KEY_PKCS8
+          privateKey: PRIVATE_KEY_PKCS8,
         });
 
         console.assert(
@@ -105,7 +103,7 @@
         try {
           const result = await githubAppJwt({
             id: APP_ID,
-            privateKey: PRIVATE_KEY
+            privateKey: PRIVATE_KEY,
           });
           console.assert(
             false,
diff --git a/test/browser.test.js b/test/browser.test.js
index f3ea3aa..3b9a569 100644
--- a/test/browser.test.js
+++ b/test/browser.test.js
@@ -1,6 +1,6 @@
 const http = require("http");
 
-const {chromium} = require("playwright");
+const { chromium } = require("playwright");
 const handler = require("serve-handler");
 
 // serve static files from project root
@@ -14,7 +14,7 @@ server.listen(async () => {
   const page = await context.newPage();
 
   const errors = [];
-  page.on("console", async data => {
+  page.on("console", async (data) => {
     const msg = String(data.args()[0]).substr("JSHandle:".length);
     if (msg === "done.") {
       await browser.close();
diff --git a/test/node.test.ts b/test/node.test.ts
index 259759c..cbe1b7d 100644
--- a/test/node.test.ts
+++ b/test/node.test.ts
@@ -73,26 +73,26 @@ beforeEach(() => {
 test("README example for app auth", async () => {
   const result = await githubAppJwt({
     id: APP_ID,
-    privateKey: PRIVATE_KEY
+    privateKey: PRIVATE_KEY,
   });
 
   expect(result).toStrictEqual({
     appId: APP_ID,
     expiration: 570,
-    token: BEARER
+    token: BEARER,
   });
 });
 
 test("README example for app auth with private key in PKCS#8 format", async () => {
   const result = await githubAppJwt({
     id: APP_ID,
-    privateKey: PRIVATE_KEY_PKCS8
+    privateKey: PRIVATE_KEY_PKCS8,
   });
 
   expect(result).toStrictEqual({
     appId: APP_ID,
     expiration: 570,
-    token: BEARER
+    token: BEARER,
   });
 });
 
@@ -100,15 +100,17 @@ test("Include the time difference in the expiration and issued_at field", async
   const result = await githubAppJwt({
     id: APP_ID,
     privateKey: PRIVATE_KEY_PKCS8,
-    now: 10
-  })
+    now: 10,
+  });
 
-  expect(result).toEqual(expect.objectContaining({
-    appId: APP_ID,
-    expiration: 580
-  }))
+  expect(result).toEqual(
+    expect.objectContaining({
+      appId: APP_ID,
+      expiration: 580,
+    })
+  );
 
-  const resultPayload = JSON.parse(atob(result.token.split('.')[1]))
-  expect(resultPayload.exp).toEqual(580)
-  expect(resultPayload.iat).toEqual(-20)
-})
+  const resultPayload = JSON.parse(atob(result.token.split(".")[1]));
+  expect(resultPayload.exp).toEqual(580);
+  expect(resultPayload.iat).toEqual(-20);
+});