diff --git a/csrf.go b/csrf.go
index 60e1878..2994054 100644
--- a/csrf.go
+++ b/csrf.go
@@ -1,11 +1,12 @@
 package csrf
 
 import (
-	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
 
+	"github.com/pkg/errors"
+
 	"github.com/gorilla/context"
 	"github.com/gorilla/securecookie"
 )
diff --git a/store_test.go b/store_test.go
index 4345990..e1c5e6b 100644
--- a/store_test.go
+++ b/store_test.go
@@ -1,12 +1,13 @@
 package csrf
 
 import (
-	"errors"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 
+	"github.com/pkg/errors"
+
 	"github.com/gorilla/securecookie"
 )