diff --git a/README.md b/README.md
index 4f9f767..3c1343d 100644
--- a/README.md
+++ b/README.md
@@ -170,7 +170,7 @@ jobs:
     name: Second Bench Job
     runs-on: ubuntu-latest
     steps:
-			- uses: actions/checkout@v2
+      - uses: actions/checkout@v2
       - run: ./benchmark.sh
       - uses: actions/upload-artifact@v2
         with:
diff --git a/package-lock.json b/package-lock.json
index 4c98909..7d1dfdb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "tachometer-reporter-action",
-  "version": "2.3.0",
+  "version": "2.4.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "2.3.0",
+      "version": "2.4.1",
       "license": "MIT",
       "dependencies": {
         "@actions/glob": "^0.1.1",
@@ -33,7 +33,7 @@
         "rollup": "^2.21.0",
         "rollup-plugin-node-externals": "^2.2.0",
         "sucrase": "^3.15.0",
-        "tachometer": "^0.5.1",
+        "tachometer": "^0.5.8",
         "uvu": "^0.3.0",
         "watch": "^1.0.2"
       }
@@ -807,15 +807,15 @@
       }
     },
     "node_modules/@types/selenium-webdriver": {
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-      "resolved": "https://registry.npmjs.org/@types/selenium-webdriver/-/selenium-webdriver-4.0.9.tgz",
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+      "version": "4.0.11",
+      "resolved": "https://registry.npmjs.org/@types/selenium-webdriver/-/selenium-webdriver-4.0.11.tgz",
+      "integrity": "sha512-VHv3kVxdploPZRa5Epsrgae9f8Wp0B+TVj3L93Yv0nB2RCRGRTKuhz/vRUZR4yItLqzdIxsxALe3qT3yqTAJTg==",
       "dev": true
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-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/@types/table/-/table-5.0.0.tgz",
-      "integrity": "sha512-fQLtGLZXor264zUPWI95WNDsZ3QV43/c0lJpR/h1hhLJumXRmHNsrvBfEzW2YMhb0EWCsn4U6h82IgwsajAuTA==",
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@types/table/-/table-6.0.0.tgz",
+      "integrity": "sha512-RSmRiYetRzpcZcgNo4x6C1VSsPGBHCGGDO7Rbnz5esVLbGONxBP1CUcn8JhAkVzUVLO+AY8yOSkb27jvfauLyg==",
       "dev": true
     },
     "node_modules/accepts": {
@@ -845,15 +845,19 @@
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     "node_modules/ajv": {
-      "version": "6.12.4",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.4.tgz",
-      "integrity": "sha512-eienB2c9qVQs2KWexhkrdMLVDoIQCz5KSeLxwg9Lzk4DOfBtIK9PQwwufcsn1jjGuf9WZmqPMbGxOzfcuphJCQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-7.1.1.tgz",
+      "integrity": "sha512-ga/aqDYnUy/o7vbsRTFhhTsNeXiYb5JWDIcRIeZfwRNCefwjNTVYCGdGSUrEmiu3yDK3vFvNbgJxvrQW4JXrYQ==",
       "dev": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.1",
-        "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.4.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2",
         "uri-js": "^4.2.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
       }
     },
     "node_modules/ansi-colors": {
@@ -1784,12 +1788,6 @@
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       "dev": true
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-    "node_modules/fast-json-stable-stringify": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
-      "integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==",
-      "dev": true
-    },
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       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/figures/-/figures-3.2.0.tgz",
@@ -2685,9 +2683,9 @@
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-      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
-      "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
+      "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
       "dev": true
     },
     "node_modules/json5": {
@@ -2716,9 +2714,9 @@
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-      "resolved": "https://registry.npmjs.org/jsonschema/-/jsonschema-1.2.6.tgz",
-      "integrity": "sha512-SqhURKZG07JyKKeo/ir24QnS4/BV7a6gQy93bUSe4lUdNp0QNpIz2c9elWJQ9dpc5cQYY6cvCzgRwy0MQCLyqA==",
+      "version": "1.2.11",
+      "resolved": "https://registry.npmjs.org/jsonschema/-/jsonschema-1.2.11.tgz",
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@@ -2753,9 +2751,9 @@
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-      "integrity": "sha512-WRtu7TPCmYePR1nazfrtuF216cIVon/3GWOvHS9QR5bIwSbnxtdpma6un3jyGGNhHsKCSzn5Ypk+EkDRvTGiFA==",
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/jszip/-/jszip-3.6.0.tgz",
+      "integrity": "sha512-jgnQoG9LKnWO3mnVNBnfhkh0QknICd1FGSrXcgrl67zioyJ4wgx25o9ZqwNtrROSflGBCGYnJfjrIyRIby1OoQ==",
       "dev": true,
       "dependencies": {
         "lie": "~3.3.0",
@@ -3167,9 +3165,9 @@
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-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
     "node_modules/lodash.camelcase": {
@@ -3646,15 +3644,6 @@
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-    "node_modules/os-tmpdir": {
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-      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
-      "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
-      "dev": true,
-      "engines": {
-        "node": ">=0.10.0"
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     "node_modules/p-cancelable": {
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       "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-2.0.0.tgz",
@@ -4100,6 +4089,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/require-from-string": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
+      "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/require-main-filename": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
@@ -4209,9 +4207,6 @@
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       "dev": true,
-      "dependencies": {
-        "fsevents": "~2.1.2"
-      },
       "bin": {
         "rollup": "dist/bin/rollup"
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@@ -4270,15 +4265,25 @@
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       "dev": true
     },
+    "node_modules/sanitize-filename": {
+      "version": "1.6.3",
+      "resolved": "https://registry.npmjs.org/sanitize-filename/-/sanitize-filename-1.6.3.tgz",
+      "integrity": "sha512-y/52Mcy7aw3gRm7IrcGDFx/bCk4AhRh2eI9luHOQM86nZsqwiRkkq2GekHXBBD+SmPidc8i2PqtYZl+pWJ8Oeg==",
+      "dev": true,
+      "dependencies": {
+        "truncate-utf8-bytes": "^1.0.0"
+      }
+    },
     "node_modules/selenium-webdriver": {
-      "version": "4.0.0-alpha.7",
-      "resolved": "https://registry.npmjs.org/selenium-webdriver/-/selenium-webdriver-4.0.0-alpha.7.tgz",
-      "integrity": "sha512-D4qnTsyTr91jT8f7MfN+OwY0IlU5+5FmlO5xlgRUV6hDEV8JyYx2NerdTEqDDkNq7RZDYc4VoPALk8l578RBHw==",
+      "version": "4.0.0-beta.1",
+      "resolved": "https://registry.npmjs.org/selenium-webdriver/-/selenium-webdriver-4.0.0-beta.1.tgz",
+      "integrity": "sha512-DJ10z6Yk+ZBaLrt1CLElytQ/FOayx29ANKDtmtyW1A6kCJx3+dsc5fFMOZxwzukDniyYsC3OObT5pUAsgkjpxQ==",
       "dev": true,
       "dependencies": {
-        "jszip": "^3.2.2",
+        "jszip": "^3.5.0",
         "rimraf": "^2.7.1",
-        "tmp": "0.0.30"
+        "tmp": "^0.2.1",
+        "ws": "^7.3.1"
       },
       "engines": {
         "node": ">= 10.15.0"
@@ -4600,9 +4605,9 @@
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-      "integrity": "sha512-cS3FiSZasFgVNjO9CP3aZmTO2VHwXKG+JN6Z85nWRyOzxRMNbZe7Xzwrewp42hj+OPMC3hk7MrAFyu/qLM65Mw==",
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+      "resolved": "https://registry.npmjs.org/systeminformation/-/systeminformation-5.5.0.tgz",
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       "dev": true,
       "os": [
         "darwin",
@@ -4625,18 +4630,18 @@
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+      "version": "6.0.7",
+      "resolved": "https://registry.npmjs.org/table/-/table-6.0.7.tgz",
+      "integrity": "sha512-rxZevLGTUzWna/qBLObOe16kB2RTnnbhciwgPbMMlazz1yZGVEgnZK762xyVdVznhqxrfCeBMmMkgOOaPwjH7g==",
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-        "ajv": "^6.10.2",
-        "lodash": "^4.17.14",
-        "slice-ansi": "^2.1.0",
-        "string-width": "^3.0.0"
+        "ajv": "^7.0.2",
+        "lodash": "^4.17.20",
+        "slice-ansi": "^4.0.0",
+        "string-width": "^4.2.0"
       },
       "engines": {
-        "node": ">=6.0.0"
+        "node": ">=10.0.0"
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     "node_modules/table-layout": {
@@ -4663,123 +4668,40 @@
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-        "@types/selenium-webdriver": "^4.0.5",
-        "@types/table": "^5.0.0",
+        "@types/selenium-webdriver": "^4.0.11",
+        "@types/table": "^6.0.0",
         "ansi-escape-sequences": "^5.0.0",
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         "command-line-usage": "^6.1.0",
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-        "get-stream": "^5.1.0",
+        "get-stream": "^6.0.0",
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-        "jsonschema": "^1.2.4",
+        "jsonschema": "~1.2.11",
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@@ -4791,12 +4713,13 @@
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         "pkg-up": "^3.1.0",
         "progress": "^2.0.3",
-        "selenium-webdriver": "^4.0.0-alpha.1",
+        "sanitize-filename": "^1.6.3",
+        "selenium-webdriver": "^4.0.0-alpha.8",
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+            "is-fullwidth-code-point": "^3.0.0"
           }
         }
       }
@@ -9188,22 +9083,22 @@
       }
     },
     "tachometer": {
-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/tachometer/-/tachometer-0.5.1.tgz",
-      "integrity": "sha512-q3uqHe6zOAaoA5Kj7ZE/j/1zcTJoSYUXMUBqbFxWGueyHMhicxJkvCngVB4x/xoJ2xMYxErmulb4BxmMUMikuQ==",
+      "version": "0.5.8",
+      "resolved": "https://registry.npmjs.org/tachometer/-/tachometer-0.5.8.tgz",
+      "integrity": "sha512-CttguFunKN/qlK2HXwzbEDGPOVCIKjTTKVzGyR3evV0/IimSryOeNgWOZzvVkURKlg86znsOHn+Ne2DHgknp6A==",
       "dev": true,
       "requires": {
         "@types/command-line-usage": "^5.0.1",
-        "@types/selenium-webdriver": "^4.0.5",
-        "@types/table": "^5.0.0",
+        "@types/selenium-webdriver": "^4.0.11",
+        "@types/table": "^6.0.0",
         "ansi-escape-sequences": "^5.0.0",
         "command-line-args": "^5.0.2",
         "command-line-usage": "^6.1.0",
         "csv-stringify": "^5.3.0",
         "fs-extra": "^9.0.1",
-        "get-stream": "^5.1.0",
+        "get-stream": "^6.0.0",
         "got": "^11.5.0",
-        "jsonschema": "^1.2.4",
+        "jsonschema": "~1.2.11",
         "jsonwebtoken": "^8.5.1",
         "jstat": "^1.9.2",
         "koa": "^2.11.0",
@@ -9215,23 +9110,21 @@
         "pkg-install": "^1.0.0",
         "pkg-up": "^3.1.0",
         "progress": "^2.0.3",
-        "selenium-webdriver": "^4.0.0-alpha.1",
+        "sanitize-filename": "^1.6.3",
+        "selenium-webdriver": "^4.0.0-alpha.8",
         "semver": "^7.1.1",
         "source-map-support": "^0.5.16",
         "strip-ansi": "^6.0.0",
-        "systeminformation": "^4.14.17",
-        "table": "^5.2.1",
+        "systeminformation": "^5.3.3",
+        "table": "^6.0.7",
         "ua-parser-js": "^0.7.19"
       },
       "dependencies": {
         "get-stream": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-5.2.0.tgz",
-          "integrity": "sha512-nBF+F1rAZVCu/p7rjzgA+Yb4lfYXrpl7a6VmJrU8wF9I1CKvP/QwPNZHnOlwbTkY6dvtFIzFMSyQXbLoTQPRpA==",
-          "dev": true,
-          "requires": {
-            "pump": "^3.0.0"
-          }
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-6.0.0.tgz",
+          "integrity": "sha512-A1B3Bh1UmL0bidM/YX2NsCOTnGJePL9rO/M+Mw3m9f2gUpfokS0hi5Eah0WSUEWZdZhIZtMjkIYS7mDfOqNHbg==",
+          "dev": true
         },
         "semver": {
           "version": "7.3.2",
@@ -9277,12 +9170,12 @@
       "dev": true
     },
     "tmp": {
-      "version": "0.0.30",
-      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.30.tgz",
-      "integrity": "sha1-ckGdSovn1s51FI/YsyTlk6cRwu0=",
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.2.1.tgz",
+      "integrity": "sha512-76SUhtfqR2Ijn+xllcI5P1oyannHNHByD80W1q447gU3mp9G9PSpGdWmjUOHRDPiHYacIk66W7ubDTuPF3BEtQ==",
       "dev": true,
       "requires": {
-        "os-tmpdir": "~1.0.1"
+        "rimraf": "^3.0.0"
       }
     },
     "to-fast-properties": {
@@ -9312,6 +9205,15 @@
       "integrity": "sha512-gduQwd1rOdDMGxFG1gEvhV88Oirdo2p+KjoYFU7k2g+i7n6AFFbDQ5kMPUsW0pNbfQsB/cwXvT1i4Bue0s9g5g==",
       "dev": true
     },
+    "truncate-utf8-bytes": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/truncate-utf8-bytes/-/truncate-utf8-bytes-1.0.2.tgz",
+      "integrity": "sha1-QFkjkJWS1W94pYGENLC3hInKXys=",
+      "dev": true,
+      "requires": {
+        "utf8-byte-length": "^1.0.1"
+      }
+    },
     "ts-interface-checker": {
       "version": "0.1.11",
       "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.1.11.tgz",
@@ -9400,14 +9302,20 @@
       "dev": true
     },
     "uri-js": {
-      "version": "4.2.2",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
-      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+      "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
       "dev": true,
       "requires": {
         "punycode": "^2.1.0"
       }
     },
+    "utf8-byte-length": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/utf8-byte-length/-/utf8-byte-length-1.0.4.tgz",
+      "integrity": "sha1-9F8VDExm7uloGGUFq5P8u4rWv2E=",
+      "dev": true
+    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -9545,6 +9453,13 @@
         "typedarray-to-buffer": "^3.1.5"
       }
     },
+    "ws": {
+      "version": "7.4.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.3.tgz",
+      "integrity": "sha512-hr6vCR76GsossIRsr8OLR9acVVm1jyfEWvhbNjtgPOrfvAlKzvyeg/P6r8RuDjRyrcQoPQT7K0DGEPc7Ae6jzA==",
+      "dev": true,
+      "requires": {}
+    },
     "xstate": {
       "version": "4.11.0",
       "resolved": "https://registry.npmjs.org/xstate/-/xstate-4.11.0.tgz",
diff --git a/package.json b/package.json
index 1c61fe3..99e29cb 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "rollup": "^2.21.0",
     "rollup-plugin-node-externals": "^2.2.0",
     "sucrase": "^3.15.0",
-    "tachometer": "^0.5.1",
+    "tachometer": "^0.5.8",
     "uvu": "^0.3.0",
     "watch": "^1.0.2"
   },
diff --git a/src/utils/tachometer.js b/src/utils/tachometer.js
index b605ec8..4ddff39 100644
--- a/src/utils/tachometer.js
+++ b/src/utils/tachometer.js
@@ -99,6 +99,7 @@ const runtimeConfidenceIntervalDimension = {
  * @returns {string}
  */
 function formatConfidenceInterval(ci, format) {
+	if (ci.low == null) return `∞ - ∞`;
 	return `${format(ci.low)} - ${format(ci.high)}`;
 }