diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644
index 0000000..8a780f7
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,39 @@
+run:
+  tests: false
+
+issues:
+  include:
+    - EXC0005
+    - EXC0011
+    - EXC0012
+    - EXC0013
+
+  max-issues-per-linter: 0
+  max-same-issues: 0
+
+linters:
+  enable:
+    - asciicheck
+    - bodyclose
+    - cyclop
+    - depguard
+    - dogsled
+    - dupl
+    - errorlint
+    - exhaustive
+    - exportloopref
+    - goconst
+    - godot
+    - godox
+    - goimports
+    - goprintffuncname
+    - gosec
+    - ifshort
+    - misspell
+    - prealloc
+    - revive
+    - rowserrcheck
+    - sqlclosecheck
+    - unconvert
+    - unparam
+    - whitespace
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d5487e..4d4a9a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,15 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.5] - 2021-08-02
+
+Updated aws-sdk-go.
+Added advanced golangci configs and fixed linter issues.
+
+## [1.1.4] - 2021-07-29
+
+Updated aws-sdk-go.
+
 ## [1.1.3] - 2021-07-24
 
 Updated aws-sdk-go.
diff --git a/README.md b/README.md
index b33cd0b..408c8ae 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ on CI, depending on your needs.
 ## Install
 
 ```sh
-go get github.com/msdundar/kanarya@v1.1.3
+go get github.com/msdundar/kanarya@v1.1.5
 ```
 
 > `kanarya` uses Go Modules to manage dependencies, and supports Go versions
diff --git a/lambda_gradual_rollout.go b/lambda_gradual_rollout.go
index 58a2e23..f333c57 100644
--- a/lambda_gradual_rollout.go
+++ b/lambda_gradual_rollout.go
@@ -26,7 +26,6 @@ func GradualRollOut(
 	sleep time.Duration,
 	payload []byte,
 ) (string, error) {
-
 	for rate := traffic; rate <= 1.0; rate += traffic {
 		sRate := math.Round(rate*100) / 100
 
@@ -68,5 +67,4 @@ func GradualRollOut(
 	}
 
 	return "", nil
-
 }
diff --git a/s3_uploader.go b/s3_uploader.go
index 53463bb..9c52448 100644
--- a/s3_uploader.go
+++ b/s3_uploader.go
@@ -30,7 +30,7 @@ func UploadToS3(client *s3.S3, lambdaPackage LambdaPackage) (S3UploadResponse, e
 	defer file.Close()
 
 	fileInfo, _ := file.Stat()
-	var size int64 = fileInfo.Size()
+	var size = fileInfo.Size()
 	buffer := make([]byte, size)
 	_, err = file.Read(buffer)