diff --git a/src/components/auth/actions.test.js b/src/components/auth/actions.test.js
index 4e005b4..8fda580 100644
--- a/src/components/auth/actions.test.js
+++ b/src/components/auth/actions.test.js
@@ -1,3 +1,4 @@
+import sinon from 'sinon';
 import expect from 'unexpected';
 
 import request from 'services/request';
diff --git a/src/services/authFlow/PermissionsState.test.js b/src/services/authFlow/PermissionsState.test.js
index 239dbe2..c9dcae4 100644
--- a/src/services/authFlow/PermissionsState.test.js
+++ b/src/services/authFlow/PermissionsState.test.js
@@ -1,3 +1,5 @@
+import sinon from 'sinon';
+
 import PermissionsState from 'services/authFlow/PermissionsState';
 import CompleteState from 'services/authFlow/CompleteState';
 
diff --git a/src/services/authFlow/ResendActivationState.test.js b/src/services/authFlow/ResendActivationState.test.js
index 3c3663b..9cc1da3 100644
--- a/src/services/authFlow/ResendActivationState.test.js
+++ b/src/services/authFlow/ResendActivationState.test.js
@@ -1,7 +1,6 @@
 import sinon from 'sinon';
 
 import ResendActivationState from 'services/authFlow/ResendActivationState';
-import CompleteState from 'services/authFlow/CompleteState';
 import ActivationState from 'services/authFlow/ActivationState';
 import RegisterState from 'services/authFlow/RegisterState';
 
diff --git a/src/services/request/PromiseMiddlewareLayer.test.js b/src/services/request/PromiseMiddlewareLayer.test.js
index 16fa930..77818fd 100644
--- a/src/services/request/PromiseMiddlewareLayer.test.js
+++ b/src/services/request/PromiseMiddlewareLayer.test.js
@@ -1,3 +1,4 @@
+import sinon from 'sinon';
 import expect from 'unexpected';
 
 import PromiseMiddlewareLayer from 'services/request/PromiseMiddlewareLayer';