diff --git a/lib/plugins/aws/provider/awsProvider.test.js b/lib/plugins/aws/provider/awsProvider.test.js
index b200bdd48..5bb35b0a9 100644
--- a/lib/plugins/aws/provider/awsProvider.test.js
+++ b/lib/plugins/aws/provider/awsProvider.test.js
@@ -41,10 +41,16 @@ describe('AwsProvider', () => {
   });
 
   describe('#constructor()', () => {
-    afterEach('Environment Variable Cleanup', () => {
-      // clear env
+    let backupProxyEnv;
+
+    beforeEach('Environment Variable Cleanup', () => {
+      backupProxyEnv = process.env.proxy;
       delete process.env.proxy;
     });
+    afterEach('Environment Variable Cleanup', () => {
+      if (backupProxyEnv) process.env.proxy = backupProxyEnv;
+      else delete process.env.proxy;
+    });
 
     it('should set Serverless instance', () => {
       expect(typeof awsProvider.serverless).to.not.equal('undefined');
@@ -136,9 +142,21 @@ describe('AwsProvider', () => {
     });
 
     describe('certificate authority - environment variable', () => {
-      afterEach('Environment Variable Cleanup', () => {
-        // clear env
+      let backupEnv;
+
+      beforeEach('Environment Variable Cleanup', () => {
+        backupEnv = {
+          ca: process.env.ca,
+          proxy: process.env.proxy,
+        };
         delete process.env.ca;
+        delete process.env.proxy;
+      });
+      afterEach('Environment Variable Cleanup', () => {
+        for (const key of Object.keys(backupEnv)) {
+          if (backupEnv[key]) process.env[key] = backupEnv[key];
+          else delete process.env[key];
+        }
       });
       it('should set AWS ca single', () => {
         process.env.ca = '-----BEGIN CERTIFICATE-----\n-----END CERTIFICATE-----';
@@ -170,7 +188,14 @@ describe('AwsProvider', () => {
       const tmpdir = os.tmpdir();
       let file1 = null;
       let file2 = null;
+      let backupEnv;
       beforeEach('Create CA Files and env vars', () => {
+        backupEnv = {
+          ca: process.env.ca,
+          cafile: process.env.cafile,
+        };
+        delete process.env.ca;
+        delete process.env.cafile;
         file1 = path.join(tmpdir, 'ca1.txt');
         file2 = path.join(tmpdir, 'ca2.txt');
         fs.writeFileSync(file1, certContents);
@@ -178,6 +203,10 @@ describe('AwsProvider', () => {
       });
 
       afterEach('CA File Cleanup', () => {
+        for (const key of Object.keys(backupEnv)) {
+          if (backupEnv[key]) process.env[key] = backupEnv[key];
+          else delete process.env[key];
+        }
         // delete files
         fs.unlinkSync(file1);
         fs.unlinkSync(file2);