diff --git a/package.json b/package.json
index 5ba5e7e..0b22051 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@turf/point-on-feature": "^6.0.2",
     "@turf/truncate": "^6.0.1",
     "benchmark": "^2.1.0",
-    "codecov": "^3.5.0",
+    "codecov": "^3.7.1",
     "debug": "^4.1.1",
     "expect.js": "^0.3.1",
     "mocha": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index 3e01376..7f336b4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -152,6 +152,11 @@
     "@sentry/types" "7.37.2"
     tslib "^1.9.3"
 
+"@tootallnate/once@1":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-1.1.2.tgz#ccb91445360179a04e7fe6aff78c00ffc1eeaf82"
+  integrity sha512-RbzJvlNzmRq5c3O09UipeuXno4tA1FE6ikOjxZK0tuxVv3412l64l5t1W5pj4+rJq9vpkm/kwiR07aZXnsKPxw==
+
 "@turf/area@^6.0.1":
   version "6.0.1"
   resolved "https://registry.npmjs.org/@turf/area/-/area-6.0.1.tgz"
@@ -292,6 +297,11 @@ acorn@^6.0.2, acorn@^6.0.7:
   resolved "https://registry.npmjs.org/acorn/-/acorn-6.1.0.tgz"
   integrity sha512-MW/FjM+IvU9CgBzjO3UIPCE2pyEwUsoFl+VGdczOPEdxfGFjuKny/gN54mOuX7Qxmb9Rg9MCn2oKiSUeW+pjrw==
 
+agent-base@5:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-5.1.1.tgz#e8fb3f242959db44d63be665db7a8e739537a32c"
+  integrity sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g==
+
 agent-base@6:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-6.0.2.tgz#49fff58577cfee3f37176feab4c22e00f86d7f77"
@@ -299,13 +309,6 @@ agent-base@6:
   dependencies:
     debug "4"
 
-agent-base@^4.3.0:
-  version "4.3.0"
-  resolved "https://registry.npmjs.org/agent-base/-/agent-base-4.3.0.tgz"
-  integrity sha512-salcGninV0nPrwpGNn4VTXBb1SOuXQBiqbrNXoeizJsHrsL6ERFM2Ne3JUSBWRE6aeNJI2ROP/WEEIDUiDe3cg==
-  dependencies:
-    es6-promisify "^5.0.0"
-
 ajv@^6.9.1:
   version "6.9.1"
   resolved "https://registry.npmjs.org/ajv/-/ajv-6.9.1.tgz"
@@ -364,10 +367,10 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
-argv@^0.0.2:
+argv@0.0.2:
   version "0.0.2"
-  resolved "https://registry.npmjs.org/argv/-/argv-0.0.2.tgz"
-  integrity sha1-7L0W+JSbFXGDcRsb2jNPN4QBhas=
+  resolved "https://registry.yarnpkg.com/argv/-/argv-0.0.2.tgz#ecbd16f8949b157183711b1bda334f37840185ab"
+  integrity sha512-dEamhpPEwRUBpLNHeuCm/v+g0anFByHahxodVO/BbAarHVBBg2MccCwf9K+o1Pof+2btdnkJelYVUWjW/VrATw==
 
 arr-diff@^4.0.0:
   version "4.0.0"
@@ -671,16 +674,16 @@ code-point-at@^1.0.0:
   resolved "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
-codecov@^3.5.0:
-  version "3.5.0"
-  resolved "https://registry.npmjs.org/codecov/-/codecov-3.5.0.tgz"
-  integrity sha512-/OsWOfIHaQIr7aeZ4pY0UC1PZT6kimoKFOFYFNb6wxo3iw12nRrh+mNGH72rnXxNsq6SGfesVPizm/6Q3XqcFQ==
+codecov@^3.7.1:
+  version "3.7.1"
+  resolved "https://registry.yarnpkg.com/codecov/-/codecov-3.7.1.tgz#434cb8d55f18ef01672e5739d3d266696bebc202"
+  integrity sha512-JHWxyPTkMLLJn9SmKJnwAnvY09kg2Os2+Ux+GG7LwZ9g8gzDDISpIN5wAsH1UBaafA/yGcd3KofMaorE8qd6Lw==
   dependencies:
-    argv "^0.0.2"
-    ignore-walk "^3.0.1"
-    js-yaml "^3.13.1"
-    teeny-request "^3.11.3"
-    urlgrey "^0.4.4"
+    argv "0.0.2"
+    ignore-walk "3.0.3"
+    js-yaml "3.13.1"
+    teeny-request "6.0.1"
+    urlgrey "0.4.4"
 
 collection-visit@^1.0.0:
   version "1.0.0"
@@ -1030,18 +1033,6 @@ es6-error@^4.0.1:
   resolved "https://registry.npmjs.org/es6-error/-/es6-error-4.1.1.tgz"
   integrity sha512-Um/+FxMr9CISWh0bi5Zv0iOD+4cFh5qLeks1qhAopKVAJw3drgKbKySikp7wGhDL0HPeaja0P5ULZrxLkniUVg==
 
-es6-promise@^4.0.3:
-  version "4.2.8"
-  resolved "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz"
-  integrity sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==
-
-es6-promisify@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.npmjs.org/es6-promisify/-/es6-promisify-5.0.0.tgz"
-  integrity sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=
-  dependencies:
-    es6-promise "^4.0.3"
-
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz"
@@ -1811,13 +1802,22 @@ http-errors@~1.7.2:
     statuses ">= 1.5.0 < 2"
     toidentifier "1.0.0"
 
-https-proxy-agent@^2.2.1:
-  version "2.2.2"
-  resolved "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-2.2.2.tgz"
-  integrity sha512-c8Ndjc9Bkpfx/vCJueCPy0jlP4ccCCSNDp8xwCZzPjKJUm+B+u9WX2x98Qx4n1PiMNTWo3D7KK5ifNV/yJyRzg==
+http-proxy-agent@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/http-proxy-agent/-/http-proxy-agent-4.0.1.tgz#8a8c8ef7f5932ccf953c296ca8291b95aa74aa3a"
+  integrity sha512-k0zdNgqWTGA6aeIRVpvfVob4fL52dTfaehylg0Y4UvSySvOq/Y+BOyPrgpUrA7HylqvU8vIZGsRuXmspskV0Tg==
   dependencies:
-    agent-base "^4.3.0"
-    debug "^3.1.0"
+    "@tootallnate/once" "1"
+    agent-base "6"
+    debug "4"
+
+https-proxy-agent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-4.0.0.tgz#702b71fb5520a132a66de1f67541d9e62154d82b"
+  integrity sha512-zoDhWrkR3of1l9QAL8/scJZyLu8j/gBkcwcaQOZh7Gyh/+uJQzGVETdgT30akuwkpL8HTRfssqI3BZuV18teDg==
+  dependencies:
+    agent-base "5"
+    debug "4"
 
 https-proxy-agent@^5.0.0:
   version "5.0.1"
@@ -1834,10 +1834,10 @@ iconv-lite@0.4.24, iconv-lite@^0.4.24:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
-ignore-walk@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.npmjs.org/ignore-walk/-/ignore-walk-3.0.1.tgz"
-  integrity sha512-DTVlMx3IYPe0/JJcYP7Gxg7ttZZu3IInhuEhbchuqneY9wWe5Ojy2mXLBaQFUQmo0AW2r3qG7m1mg86js+gnlQ==
+ignore-walk@3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.3.tgz#017e2447184bfeade7c238e4aefdd1e8f95b1e37"
+  integrity sha512-m7o6xuOaT1aqheYHKf8W6J5pYH85ZI9w077erOzLje3JsB1gkafkAhHHY19dqjulgIZHFm32Cp5uNZgcQqdJKw==
   dependencies:
     minimatch "^3.0.4"
 
@@ -2213,17 +2213,9 @@ js-types@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/js-types/-/js-types-1.0.0.tgz"
 
-js-yaml@^3.12.0:
-  version "3.12.1"
-  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.1.tgz"
-  integrity sha512-um46hB9wNOKlwkHgiuyEVAybXBjwFUV0Z/RaHJblRd9DXltue9FTYvzCr9ErQrK9Adz5MU4gHWVaNUfdmrC8qA==
-  dependencies:
-    argparse "^1.0.7"
-    esprima "^4.0.0"
-
-js-yaml@^3.13.1:
+js-yaml@3.13.1, js-yaml@^3.12.0:
   version "3.13.1"
-  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   integrity sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==
   dependencies:
     argparse "^1.0.7"
@@ -3562,6 +3554,13 @@ static-extend@^0.1.1:
   resolved "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz"
   integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
 
+stream-events@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/stream-events/-/stream-events-1.0.5.tgz#bbc898ec4df33a4902d892333d47da9bf1c406d5"
+  integrity sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==
+  dependencies:
+    stubs "^3.0.0"
+
 string-width@^1.0.1:
   version "1.0.2"
   resolved "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz"
@@ -3629,6 +3628,11 @@ strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz"
 
+stubs@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/stubs/-/stubs-3.0.0.tgz#e8d2ba1fa9c90570303c030b6900f7d5f89abe5b"
+  integrity sha512-PdHt7hHUJKxvTCgbKX9C1V/ftOcjJQgz8BZwNfV5c4B6dcGqlpelTbJ999jBGZ2jYiPAwcX5dP6oBwVlBlUbxw==
+
 superagent@^3.8.3:
   version "3.8.3"
   resolved "https://registry.npmjs.org/superagent/-/superagent-3.8.3.tgz"
@@ -3691,13 +3695,15 @@ table@^5.2.3:
     slice-ansi "^2.1.0"
     string-width "^3.0.0"
 
-teeny-request@^3.11.3:
-  version "3.11.3"
-  resolved "https://registry.npmjs.org/teeny-request/-/teeny-request-3.11.3.tgz"
-  integrity sha512-CKncqSF7sH6p4rzCgkb/z/Pcos5efl0DmolzvlqRQUNcpRIruOhY9+T1FsIlyEbfWd7MsFpodROOwHYh2BaXzw==
+teeny-request@6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/teeny-request/-/teeny-request-6.0.1.tgz#9b1f512cef152945827ba7e34f62523a4ce2c5b0"
+  integrity sha512-TAK0c9a00ELOqLrZ49cFxvPVogMUFaWY8dUsQc/0CuQPGF+BOxOQzXfE413BAk2kLomwNplvdtMpeaeGWmoc2g==
   dependencies:
-    https-proxy-agent "^2.2.1"
+    http-proxy-agent "^4.0.0"
+    https-proxy-agent "^4.0.0"
     node-fetch "^2.2.0"
+    stream-events "^1.0.5"
     uuid "^3.3.2"
 
 term-size@^1.2.0:
@@ -3874,10 +3880,10 @@ url-parse-lax@^1.0.0:
   dependencies:
     prepend-http "^1.0.1"
 
-urlgrey@^0.4.4:
+urlgrey@0.4.4:
   version "0.4.4"
-  resolved "https://registry.npmjs.org/urlgrey/-/urlgrey-0.4.4.tgz"
-  integrity sha1-iS/pWWCAXoVRnxzUOJ8stMu3ZS8=
+  resolved "https://registry.yarnpkg.com/urlgrey/-/urlgrey-0.4.4.tgz#892fe95960805e85519f1cd4389f2cb4cbb7652f"
+  integrity sha512-vfQzI+JDPBrBRw374pgWi6bFPfc+6BonRsazCj3weBIWe8moRcvfgy0lpaiGkMGnExs4Z/Dws8lp5mc9IegURw==
 
 use@^3.1.0:
   version "3.1.0"