diff --git a/.golangci.yml b/.golangci.yml
index 105af5a..d8da413 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -28,6 +28,7 @@ linters:
     - stylecheck
     - exportloopref
     - godot
+    - gofumpt
 
 linters-settings:
   gomnd:
diff --git a/api/json.go b/api/json.go
index 5059ec5..0aade56 100644
--- a/api/json.go
+++ b/api/json.go
@@ -13,6 +13,7 @@ type RequestAPILogin struct {
 type ResponseAPILogin struct {
 	Token string `json:"token"`
 }
+
 type ResponseAPIFilePost struct {
 	Message string                     `json:"message"`
 	Files   []ResponseAPIFilePostFiles `json:"files"`
diff --git a/auth.go b/auth.go
index f4e403b..a720d27 100644
--- a/auth.go
+++ b/auth.go
@@ -58,7 +58,6 @@ func (as *AuthService) ValidateToken(rawToken string) (*Claims, error) {
 	token, err := jwt.ParseWithClaims(rawToken, claims, func(t *jwt.Token) (interface{}, error) {
 		return as.hmacSecret, nil
 	})
-
 	if err != nil {
 		return nil, err
 	}
diff --git a/client/client.go b/client/client.go
index 18ba019..1958972 100644
--- a/client/client.go
+++ b/client/client.go
@@ -31,6 +31,7 @@ func (c *Client) WriteConfigToWriter(w io.Writer) error {
 	encoder := json.NewEncoder(w)
 	return encoder.Encode(c)
 }
+
 func (c *Client) WriteConfig() error {
 	dir := configdir.LocalConfig("gpaste")
 	// Ensure dir exists
diff --git a/files/filestore_fs.go b/files/filestore_fs.go
index 0c9491b..8d9e996 100644
--- a/files/filestore_fs.go
+++ b/files/filestore_fs.go
@@ -23,6 +23,7 @@ func NewFSFileStore(dir string) (*FSFileStore, error) {
 
 	return s, err
 }
+
 func (s *FSFileStore) Store(f *File) error {
 	defer f.Body.Close()
 
diff --git a/users/userstore_bolt.go b/users/userstore_bolt.go
index c67b704..8ad11e7 100644
--- a/users/userstore_bolt.go
+++ b/users/userstore_bolt.go
@@ -15,7 +15,7 @@ type BoltUserStore struct {
 }
 
 func NewBoltUserStore(path string) (*BoltUserStore, error) {
-	db, err := bbolt.Open(path, 0666, nil) // nolint: gomnd
+	db, err := bbolt.Open(path, 0o666, nil) // nolint: gomnd
 	if err != nil {
 		return nil, err
 	}
@@ -45,7 +45,6 @@ func (s *BoltUserStore) Get(username string) (*User, error) {
 		}
 		return nil
 	})
-
 	if err != nil {
 		return nil, err
 	}
@@ -72,6 +71,7 @@ func (s *BoltUserStore) Delete(username string) error {
 		return bkt.Delete([]byte(username))
 	})
 }
+
 func (s *BoltUserStore) List() ([]string, error) {
 	var ids []string
 
diff --git a/users/userstore_memory.go b/users/userstore_memory.go
index f21bc6c..763e237 100644
--- a/users/userstore_memory.go
+++ b/users/userstore_memory.go
@@ -15,6 +15,7 @@ type MemoryUserStore struct {
 func NewMemoryUserStore() *MemoryUserStore {
 	return &MemoryUserStore{users: make(map[string]*User)}
 }
+
 func (s *MemoryUserStore) Get(username string) (*User, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -45,6 +46,7 @@ func (s *MemoryUserStore) Delete(username string) error {
 
 	return nil
 }
+
 func (s *MemoryUserStore) List() ([]string, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()