diff --git a/.drone.yml b/.drone.yml
index cbe30e2..f4b2251 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -74,5 +74,6 @@ steps:
   - name: lint
     image: golang:1.17
     commands:
-      - go get -u github.com/mgechev/revive
+      - go get -d github.com/mgechev/revive
+      - go install github.com/mgechev/revive
       - revive -formatter=friendly -config=revive.toml ./...
diff --git a/copy.go b/copy.go
index fdf32d9..6b3ace3 100644
--- a/copy.go
+++ b/copy.go
@@ -1,3 +1,4 @@
+// Package fieldmask_utils provides utility functions for copying data from structs using a field mask.
 package fieldmask_utils
 
 import (
diff --git a/go.mod b/go.mod
index 735e3da..7d661de 100644
--- a/go.mod
+++ b/go.mod
@@ -3,12 +3,10 @@ module github.com/mennanov/fieldmask-utils
 go 1.16
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.8.0
 	google.golang.org/genproto v0.0.0-20220531173845-685668d2de03
 	google.golang.org/protobuf v1.28.0
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 8d546f2..33b4660 100644
--- a/go.sum
+++ b/go.sum
@@ -60,10 +60,12 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=