diff --git a/go.mod b/go.mod
index f606eb7..83c8559 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/0xfelix/hetzner-dnsapi-proxy
 go 1.23
 
 require (
-	github.com/caarlos0/env/v11 v11.3.0
+	github.com/caarlos0/env/v11 v11.3.1
 	github.com/gin-gonic/gin v1.10.0
 )
 
diff --git a/go.sum b/go.sum
index 5bb7374..f587f75 100644
--- a/go.sum
+++ b/go.sum
@@ -3,8 +3,8 @@ github.com/bytedance/sonic v1.12.4/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKz
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
 github.com/bytedance/sonic/loader v0.2.1 h1:1GgorWTqf12TA8mma4DDSbaQigE2wOgQo7iCjjJv3+E=
 github.com/bytedance/sonic/loader v0.2.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
-github.com/caarlos0/env/v11 v11.3.0 h1:CVTN6W6+twFC1jHKUwsw9eOTEiFpzyJOSA2AyHa8uvw=
-github.com/caarlos0/env/v11 v11.3.0/go.mod h1:Q5lYHeOsgY20CCV/R+b50Jwg2MnjySid7+3FUBz2BJw=
+github.com/caarlos0/env/v11 v11.3.1 h1:cArPWC15hWmEt+gWk7YBi7lEXTXCvpaSdCiZE2X5mCA=
+github.com/caarlos0/env/v11 v11.3.1/go.mod h1:qupehSf/Y0TUTsxKywqRt/vJjN5nz6vauiYEUUr8P4U=
 github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
 github.com/cloudwego/base64x v0.1.4/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
 github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg=
diff --git a/vendor/github.com/caarlos0/env/v11/.gitignore b/vendor/github.com/caarlos0/env/v11/.gitignore
index ca6a0ff..9eea1c9 100644
--- a/vendor/github.com/caarlos0/env/v11/.gitignore
+++ b/vendor/github.com/caarlos0/env/v11/.gitignore
@@ -2,3 +2,4 @@ coverage.txt
 bin
 card.png
 dist
+codecov*
diff --git a/vendor/github.com/caarlos0/env/v11/env.go b/vendor/github.com/caarlos0/env/v11/env.go
index f658e3b..805ee2d 100644
--- a/vendor/github.com/caarlos0/env/v11/env.go
+++ b/vendor/github.com/caarlos0/env/v11/env.go
@@ -195,19 +195,20 @@ func mergeOptions[T any](target, source *T) {
 
 	targetType := targetPtr.Type()
 	for i := 0; i < targetPtr.NumField(); i++ {
+		fieldName := targetType.Field(i).Name
 		targetField := targetPtr.Field(i)
-		sourceField := sourcePtr.FieldByName(targetType.Field(i).Name)
+		sourceField := sourcePtr.FieldByName(fieldName)
 
 		if targetField.CanSet() && !isZero(sourceField) {
-			switch targetField.Kind() {
-			case reflect.Map:
+			// FuncMaps are being merged, while Environments must be overwritten
+			if fieldName == "FuncMap" {
 				if !sourceField.IsZero() {
 					iter := sourceField.MapRange()
 					for iter.Next() {
 						targetField.SetMapIndex(iter.Key(), iter.Value())
 					}
 				}
-			default:
+			} else {
 				targetField.Set(sourceField)
 			}
 		}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index db6b93a..661db9d 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -36,7 +36,7 @@ github.com/bytedance/sonic/utf8
 github.com/bytedance/sonic/loader
 github.com/bytedance/sonic/loader/internal/abi
 github.com/bytedance/sonic/loader/internal/rt
-# github.com/caarlos0/env/v11 v11.3.0
+# github.com/caarlos0/env/v11 v11.3.1
 ## explicit; go 1.18
 github.com/caarlos0/env/v11
 # github.com/cloudwego/base64x v0.1.4