diff --git a/README.md b/README.md
index 4245356..e1c6315 100644
--- a/README.md
+++ b/README.md
@@ -16,11 +16,10 @@ Inspired by [mtprotoproxy](https://github.com/alexbers/mtprotoproxy)
 
 ## Building ##
 
-You will most likely need `go 1.21`
+You will most likely need `go 1.23`
 
 ```shell
 go mod download
-
 go build ./cmd/tgp
 ```
 
diff --git a/go.mod b/go.mod
index 194ffb1..0543207 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/geovex/tgp
 
-go 1.21
+go 1.23
 
 require (
 	github.com/BurntSushi/toml v1.3.2
diff --git a/internal/config/config.go b/internal/config/config.go
index 72c01b5..b6a4387 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -111,15 +111,14 @@ func (c *Config) GetUserSecret(user string) (string, error) {
 	}
 }
 
-func (c *Config) IterateUsers() chan *User {
-	result := make(chan *User)
-	go func() {
-		defer close(result)
+func (c *Config) IterateUsers() func(func(*User) bool) {
+	return func(fn func(*User) bool) {
 		for _, u := range c.users.Users {
-			result <- u
+			if fn(u) {
+				return
+			}
 		}
-	}()
-	return result
+	}
 }
 
 func (c *Config) GetDefaultSocks() (url, user, pass *string) {