diff --git a/lib/babel-options-util.js b/lib/babel-options-util.js
index f48a8956..3683354f 100644
--- a/lib/babel-options-util.js
+++ b/lib/babel-options-util.js
@@ -1,4 +1,5 @@
 const VersionChecker = require("ember-cli-version-checker");
+const resolvePackagePath = require("resolve-package-path");
 const clone = require("clone");
 const semver = require("semver");
 
@@ -406,16 +407,23 @@ function _shouldIncludeDecoratorPlugins(config) {
 
 function _shouldHandleTypeScript(config, parent) {
   let emberCLIBabelConfig = config["ember-cli-babel"] || {};
+
   if (typeof emberCLIBabelConfig.enableTypeScriptTransform === "boolean") {
     return emberCLIBabelConfig.enableTypeScriptTransform;
   }
-  let typeScriptAddon =
-    parent.addons &&
-    parent.addons.find((a) => a.name === "ember-cli-typescript");
-  return (
-    typeof typeScriptAddon !== "undefined" &&
-    semver.gte(typeScriptAddon.pkg.version, "4.0.0-alpha.1")
-  );
+
+  let tsDependency =
+    parent.pkg &&
+    parent.pkg.dependencies &&
+    parent.pkg.dependencies["ember-cli-typescript"];
+
+  if (typeof tsDependency !== "undefined") {
+    let tsPkgPath = resolvePackagePath("ember-cli-typescript", parent.root);
+    let tsPkg = tsPkgPath ? require(tsPkgPath) : null;
+    return tsPkg ? semver.gte(tsPkg.version, "4.0.0-alpha.1") : false;
+  }
+
+  return false;
 }
 
 function _getAddonProvidedConfig(addonOptions) {
diff --git a/node-tests/addon-test.js b/node-tests/addon-test.js
index d3d5a1bd..c2db9bce 100644
--- a/node-tests/addon-test.js
+++ b/node-tests/addon-test.js
@@ -800,14 +800,51 @@ describe('ember-cli-babel', function() {
     });
 
     describe('TypeScript transpilation', function() {
-      beforeEach(function() {
-        this.addon.parent.addons.push({
-          name: 'ember-cli-typescript',
-          pkg: {
-            version: '4.0.0-alpha.1'
-          }
+      let input;
+      let output;
+      let subject;
+      let project;
+      let unlink;
+
+      beforeEach(co.wrap(function*() {
+        let fixturifyProject = new FixturifyProject('whatever', '0.0.1');
+        fixturifyProject.addDependency('ember-cli-typescript', '4.0.0-alpha.1', addon => {
+          return prepareAddon(addon);
         });
-      });
+        fixturifyProject.addDependency('ember-cli-babel', 'babel/ember-cli-babel#master');
+        let pkg = JSON.parse(fixturifyProject.toJSON('package.json'));
+        fixturifyProject.writeSync();
+
+        let linkPath = path.join(fixturifyProject.root, 'whatever/node_modules/ember-cli-babel');
+        let addonPath = path.resolve(__dirname, '../');
+        rimraf.sync(linkPath);
+        fs.symlinkSync(addonPath, linkPath, 'junction');
+        unlink = () => {
+          fs.unlinkSync(linkPath);
+        };
+
+        let cli = new MockCLI();
+        let root = path.join(fixturifyProject.root, 'whatever');
+        project = new EmberProject(root, pkg, cli.ui, cli);
+        project.initializeAddons();
+        this.addon = project.addons.find(a => { return a.name === 'ember-cli-babel'; });
+        input = yield createTempDir();
+      }));
+
+      afterEach(co.wrap(function*() {
+        unlink();
+
+        if (input) {
+          yield input.dispose();
+        }
+
+        if (output) {
+          yield output.dispose();
+        }
+
+        // shut down workers after the tests are run so that mocha doesn't hang
+        yield terminateWorkerPool();
+      }));
 
       it('should transpile .ts files', co.wrap(function*() {
         input.write({ 'foo.ts': `let foo: string = "hi";` });
@@ -967,40 +1004,66 @@ describe('ember-cli-babel', function() {
   });
 
   describe('_shouldHandleTypeScript', function() {
+    let project;
+    let unlink;
+
+    let setupTsAddon = function*(context, version = '4.0.0-alpha.1') {
+      let fixturifyProject = new FixturifyProject('whatever', '0.0.1');
+      fixturifyProject.addDependency('ember-cli-typescript', version, addon => {
+        return prepareAddon(addon);
+      });
+      fixturifyProject.addDependency('ember-cli-babel', 'babel/ember-cli-babel#master');
+      let pkg = JSON.parse(fixturifyProject.toJSON('package.json'));
+      fixturifyProject.writeSync();
+
+      let linkPath = path.join(fixturifyProject.root, 'whatever/node_modules/ember-cli-babel');
+      let addonPath = path.resolve(__dirname, '../');
+      rimraf.sync(linkPath);
+      fs.symlinkSync(addonPath, linkPath, 'junction');
+      unlink = () => {
+        fs.unlinkSync(linkPath);
+      };
+
+      let cli = new MockCLI();
+      let root = path.join(fixturifyProject.root, 'whatever');
+      project = new EmberProject(root, pkg, cli.ui, cli);
+      project.initializeAddons();
+      context.addon = project.addons.find(a => { return a.name === 'ember-cli-babel'; });
+      input = yield createTempDir();
+    }
+
+    afterEach(co.wrap(function*() {
+      if (unlink) {
+        unlink();
+        unlink = undefined;
+      }
+
+      // shut down workers after the tests are run so that mocha doesn't hang
+      yield terminateWorkerPool();
+    }));
+
     it('should return false by default', function() {
       expect(_shouldHandleTypeScript({}, this.addon.parent)).to.be.false;
     });
-    it('should return true when ember-cli-typescript >= 4.0.0-alpha.1 is installed', function() {
-      this.addon.parent.addons.push({
-        name: 'ember-cli-typescript',
-        pkg: {
-          version: '4.0.0-alpha.1',
-        },
-      });
+    it('should return true when ember-cli-typescript >= 4.0.0-alpha.1 is installed', function*() {
+      yield setupTsAddon(this);
       expect(_shouldHandleTypeScript({}, this.addon.parent)).to.be.true;
     });
-    it('should return false when ember-cli-typescript < 4.0.0-alpha.1 is installed', function() {
-      this.addon.parent.addons.push({
-        name: 'ember-cli-typescript',
-        pkg: {
-          version: '3.0.0',
-        },
-      });
+    it('should return false when ember-cli-typescript < 4.0.0-alpha.1 is installed', function*() {
+      yield setupTsAddon(this, '3.0.0');
       expect(_shouldHandleTypeScript({}, this.addon.parent)).to.be.false;
     });
-    it('should return true when the TypeScript transform is manually enabled', function() {
+    it('should return true when the TypeScript transform is manually enabled', function*() {
+      yield setupTsAddon(this, '3.0.0');
       expect(_shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: true } }, this.addon.parent)).to.be.true;
     });
+
     it('should return false when the TypeScript transforms is manually disabled', function() {
       expect(_shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: false } }, this.addon.parent)).to.be.false;
     });
-    it('should return false when the TypeScript transform is manually disabled, even when ember-cli-typescript >= 4.0.0-alpha.1 is installed', function() {
-      this.addon.parent.addons.push({
-        name: 'ember-cli-typescript',
-        pkg: {
-          version: '4.0.0-alpha.1',
-        },
-      });
+
+    it('should return false when the TypeScript transform is manually disabled, even when ember-cli-typescript >= 4.0.0-alpha.1 is installed', function*() {
+      yield setupTsAddon(this, '4.1.0');
       expect(_shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: false } }, this.addon.parent)).to.be.false;
     });
   });