diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bb69de..291e614 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@
 * [ENHANCEMENT]
 * [BUGFIX]
 
+## 0.6.1 / 2022-06-08
+
+* [BUGFIX] Fix RecordRtts memory leak for config file targets #73
+
 ## 0.6.0 / 2022-05-23
 
 * [CHANGE] Exit with a non-zero error code on fatal error #70
diff --git a/VERSION b/VERSION
index a918a2a..ee6cdce 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.6.0
+0.6.1
diff --git a/go.mod b/go.mod
index f6e414a..afb9308 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/prometheus/client_golang v1.12.2
 	github.com/prometheus/common v0.34.0
 	github.com/prometheus/exporter-toolkit v0.7.1
-	golang.org/x/sync v0.0.0-20220513210516-0976fa681c29
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/yaml.v2 v2.4.0
 )
diff --git a/go.sum b/go.sum
index 21bb8ac..a41021d 100644
--- a/go.sum
+++ b/go.sum
@@ -306,8 +306,8 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220513210516-0976fa681c29 h1:w8s32wxx3sY+OjLlv9qltkLU5yvJzxjjgiHWLjdIcw4=
-golang.org/x/sync v0.0.0-20220513210516-0976fa681c29/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
diff --git a/main.go b/main.go
index f20665d..a048c22 100644
--- a/main.go
+++ b/main.go
@@ -17,7 +17,6 @@ package main
 import (
 	"errors"
 	"fmt"
-	"math"
 	"net/http"
 	_ "net/http/pprof"
 	"os"