diff --git a/internal/config/config.go b/internal/config/config.go
index 7a49ceb15..c97be3633 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -2,7 +2,6 @@ package config
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/url"
 	"os"
 	"reflect"
@@ -62,7 +61,7 @@ func (c *Config) Setup(paths ...string) {
 }
 
 func (c *Config) LoadConfig(path string) error {
-	raw, err := ioutil.ReadFile(path)
+	raw, err := os.ReadFile(path)
 	if err != nil {
 		return fmt.Errorf("Failed to load config file: %w", err)
 	}
@@ -129,7 +128,7 @@ func (c *Config) parseScheme(rawVal string) string {
 		}
 		return u.RawQuery
 	} else if u.Scheme == "file" {
-		d, err := ioutil.ReadFile(u.Path)
+		d, err := os.ReadFile(u.Path)
 		if err != nil {
 			return u.RawQuery
 		}
diff --git a/internal/web/metrics.go b/internal/web/metrics.go
index e7e58cce5..942c9e6d6 100644
--- a/internal/web/metrics.go
+++ b/internal/web/metrics.go
@@ -1,7 +1,7 @@
 package web
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/gorilla/mux"
@@ -43,12 +43,7 @@ func RunMetricsServer() {
 			l.WithError(err).Warning("failed to get upstream metrics")
 			return
 		}
-		bm, err := ioutil.ReadAll(res.Body)
-		if err != nil {
-			l.WithError(err).Warning("failed to get upstream metrics")
-			return
-		}
-		_, err = rw.Write(bm)
+		_, err = io.Copy(rw, res.Body)
 		if err != nil {
 			l.WithError(err).Warning("failed to get upstream metrics")
 			return
diff --git a/internal/web/sentry_proxy.go b/internal/web/sentry_proxy.go
index 328307608..8fb79dafb 100644
--- a/internal/web/sentry_proxy.go
+++ b/internal/web/sentry_proxy.go
@@ -1,8 +1,9 @@
 package web
 
 import (
+	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 
@@ -19,13 +20,14 @@ func (ws *WebServer) APISentryProxy(rw http.ResponseWriter, r *http.Request) {
 		rw.WriteHeader(http.StatusBadRequest)
 		return
 	}
-	fullBody, err := ioutil.ReadAll(r.Body)
+	fb := &bytes.Buffer{}
+	_, err := io.Copy(fb, r.Body)
 	if err != nil {
 		ws.log.Debug("failed to read body")
 		rw.WriteHeader(http.StatusBadRequest)
 		return
 	}
-	lines := strings.Split(string(fullBody), "\n")
+	lines := strings.Split(string(fb.Bytes()), "\n")
 	if len(lines) < 1 {
 		rw.WriteHeader(http.StatusBadRequest)
 		return
@@ -42,7 +44,7 @@ func (ws *WebServer) APISentryProxy(rw http.ResponseWriter, r *http.Request) {
 		rw.WriteHeader(http.StatusBadRequest)
 		return
 	}
-	res, err := http.DefaultClient.Post("https://sentry.beryju.org/api/8/envelope/", "application/octet-stream", strings.NewReader(string(fullBody)))
+	res, err := http.DefaultClient.Post("https://sentry.beryju.org/api/8/envelope/", "application/octet-stream", fb)
 	if err != nil {
 		ws.log.WithError(err).Warning("failed to proxy sentry")
 		rw.WriteHeader(http.StatusBadRequest)