diff --git a/.circleci/config.yml b/.circleci/config.yml
index 85524c0..61bfe82 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,9 +1,33 @@
-version: 2
+version: 2.1
+
+commands:
+  cached-dependencies:
+    steps:
+      - restore_cache:
+          name: Restore Yarn Package Cache
+          keys:
+            - yarn-packages-{{ checksum "yarn.lock" }}
+      - run:
+          name: Install Dependencies
+          command: yarn install --frozen-lockfile
+      - save_cache:
+          name: Save Yarn Package Cache
+          key: yarn-packages-{{ checksum "yarn.lock" }}
+          paths:
+            - ~/.cache/yarn
+
+  install_and_test:
+    description: >-
+      Install everything required to run the test suite, then run it.
+    steps:
+      - cached-dependencies
+      - run: yarn test.prod
 
 jobs:
-  test_node_8:
+  # https://nodejs.org/en/about/releases/
+  test_node_lts:
     docker:
-      - image: circleci/node:8
+      - image: circleci/node:lts
     steps:
       - checkout
       - run:
@@ -11,20 +35,33 @@ jobs:
           command: |
             curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
             chmod +x ./cc-test-reporter
-      - run: yarn
       - run:
           name: cc-before
           command: |
             ./cc-test-reporter before-build
-      - run: yarn test.prod
+      - install_and_test
       - run:
           name: cc-after
           command: |
             ./cc-test-reporter after-build --coverage-input-type lcov --exit-code $?
 
+  test_node_dubnium:
+    docker:
+      - image: circleci/node:dubnium
+    steps:
+      - checkout
+      - install_and_test
+
+  test_node_latest:
+    docker:
+      - image: circleci/node:latest
+    steps:
+      - checkout
+      - install_and_test
+
   release:
     docker:
-      - image: circleci/node:8
+      - image: circleci/node:lts
     steps:
       - checkout
       - run: yarn
@@ -35,10 +72,14 @@ workflows:
   version: 2
   test_and_release:
     jobs:
-      - test_node_8
+      - test_node_lts
+      - test_node_dubnium
+      - test_node_latest
       - release:
           filters:
             branches:
               only: master
           requires:
-            - test_node_8
+            - test_node_lts
+            - test_node_dubnium
+            - test_node_latest
diff --git a/package.json b/package.json
index 8935179..9a645ef 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "**/*"
   ],
   "engines": {
-    "node": ">=8.3.0"
+    "node": ">=10.8"
   },
   "scripts": {
     "build": "sl-scripts build",
@@ -41,7 +41,7 @@
   "dependencies": {
     "@stoplight/ordered-object-literal": "^1.0.1",
     "@stoplight/types": "^11.1.1",
-    "@stoplight/yaml-ast-parser": "0.0.45",
+    "@stoplight/yaml-ast-parser": "0.0.46",
     "lodash": "^4.17.15"
   },
   "devDependencies": {
diff --git a/src/__tests__/parseWithPointers.spec.ts b/src/__tests__/parseWithPointers.spec.ts
index 53a9201..014a302 100644
--- a/src/__tests__/parseWithPointers.spec.ts
+++ b/src/__tests__/parseWithPointers.spec.ts
@@ -812,4 +812,8 @@ bar: false
       });
     });
   });
+
+  test.each(['6917528997577384320', '9223372036854775807'])('big int %s', value => {
+    expect(parseWithPointers(`${value}`).data).toEqual(BigInt(value));
+  });
 });
diff --git a/src/parseWithPointers.ts b/src/parseWithPointers.ts
index e092c37..8dd73b7 100644
--- a/src/parseWithPointers.ts
+++ b/src/parseWithPointers.ts
@@ -3,9 +3,9 @@ import { DiagnosticSeverity, Dictionary, IDiagnostic, Optional } from '@stopligh
 import {
   determineScalarType,
   load as loadAST,
+  parseYamlBigInteger,
   parseYamlBoolean,
   parseYamlFloat,
-  parseYamlInteger,
   YAMLException,
 } from '@stoplight/yaml-ast-parser';
 import { buildJsonPath } from './buildJsonPath';
@@ -120,7 +120,7 @@ export const walkAST = (
   return node;
 };
 
-function getScalarValue(node: YAMLScalar): number | null | boolean | string | void {
+function getScalarValue(node: YAMLScalar): number | bigint | null | boolean | string | void {
   switch (determineScalarType(node)) {
     case ScalarType.null:
       return null;
@@ -129,7 +129,7 @@ function getScalarValue(node: YAMLScalar): number | null | boolean | string | vo
     case ScalarType.bool:
       return parseYamlBoolean(node.value);
     case ScalarType.int:
-      return parseYamlInteger(node.value);
+      return parseYamlBigInteger(node.value);
     case ScalarType.float:
       return parseYamlFloat(node.value);
   }
diff --git a/tsconfig.json b/tsconfig.json
index 54647f0..f00c04c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,5 +1,6 @@
 {
   "extends": "./node_modules/@stoplight/scripts/tsconfig.json",
+  "lib": ["es2020", "dom"],
 
   // target all ts files
   "include": ["."]
diff --git a/yarn.lock b/yarn.lock
index f3ac98a..13b481d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1587,10 +1587,10 @@
   dependencies:
     "@types/json-schema" "^7.0.3"
 
-"@stoplight/yaml-ast-parser@0.0.45":
-  version "0.0.45"
-  resolved "https://registry.yarnpkg.com/@stoplight/yaml-ast-parser/-/yaml-ast-parser-0.0.45.tgz#672c0a1511d581843be5a9c55899ca95a30dcadb"
-  integrity sha512-0MTEvgp3XMdeMUSTCGiNECuC+YlLbzytDEIOJVDHrrmzVZpIR3gGnHI6mmPI4P7saPxUiHxFF2uuoTuCNlKjrw==
+"@stoplight/yaml-ast-parser@0.0.46":
+  version "0.0.46"
+  resolved "https://registry.yarnpkg.com/@stoplight/yaml-ast-parser/-/yaml-ast-parser-0.0.46.tgz#ee9c8da3d8b89ae9007bfe015daf34ee68db9bd5"
+  integrity sha512-eKVeNt6n3U/nA2hjwUsyLOC48DaMiwRx/qrLPzt9Oie+ke4lPA2Jm8ozUMcleVdV5JyZNpG3UhBcSb3PTlt0Kw==
 
 "@storybook/addon-actions@4.0.11":
   version "4.0.11"