diff --git a/jest.config.js b/jest.config.js
index a94b37b7c9fd..043a5c2f14aa 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -10,4 +10,5 @@ module.exports = {
   ],
   testPathIgnorePatterns: ["/node_modules/", "<rootDir>/clients/client-.*"],
   coveragePathIgnorePatterns: ["/node_modules/", "<rootDir>/clients/client-.*", "/__fixtures__/"],
+  setupFilesAfterEnv: ["<rootDir>/scripts/jest/forceGlobalGc.js"],
 };
diff --git a/package.json b/package.json
index d5f1a9bf3da3..56aeb047d48b 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "build:all": "yarn build:crypto-dependencies && lerna run build",
     "build-documentation": "yarn remove-documentation && typedoc",
     "pretest:all": "yarn build:all",
-    "test:all": "jest --coverage --passWithNoTests && lerna run test --scope '@aws-sdk/{fetch-http-handler,hash-blob-browser}'",
+    "test:all": "node --expose-gc ./node_modules/.bin/jest --coverage --passWithNoTests && lerna run test --scope '@aws-sdk/{fetch-http-handler,hash-blob-browser}'",
     "test:functional": "jest --config tests/functional/jest.config.js --passWithNoTests",
     "test:integration-legacy": "cucumber-js --fail-fast",
     "test:integration": "jest --config jest.config.integ.js --passWithNoTests",
diff --git a/scripts/jest/forceGlobalGc.js b/scripts/jest/forceGlobalGc.js
new file mode 100644
index 000000000000..3467479df0dc
--- /dev/null
+++ b/scripts/jest/forceGlobalGc.js
@@ -0,0 +1,3 @@
+afterEach(() => {
+  if (global.gc) global.gc();
+});