diff --git a/internal/internal_test.go b/internal/internal_test.go
index bb186f5fc..83a7e88d6 100644
--- a/internal/internal_test.go
+++ b/internal/internal_test.go
@@ -8,6 +8,7 @@ import (
 	"io/ioutil"
 	"log"
 	"os/exec"
+	"regexp"
 	"testing"
 	"time"
 
@@ -480,3 +481,11 @@ func TestParseTimestamp(t *testing.T) {
 		})
 	}
 }
+
+func TestProductToken(t *testing.T) {
+	token := ProductToken()
+	// Telegraf version depends on the call to SetVersion, it cannot be set
+	// multiple times and is not thread-safe.
+	re := regexp.MustCompile(`^Telegraf/[^\s]+ Go/\d+.\d+.\d+$`)
+	require.True(t, re.MatchString(token), token)
+}
diff --git a/plugins/inputs/solr/solr.go b/plugins/inputs/solr/solr.go
index a9257c987..4629e0246 100644
--- a/plugins/inputs/solr/solr.go
+++ b/plugins/inputs/solr/solr.go
@@ -486,7 +486,7 @@ func (s *Solr) gatherData(url string, v interface{}) error {
 		req.SetBasicAuth(s.Username, s.Password)
 	}
 
-	req.Header.Set("User-Agent", "Telegraf/"+internal.Version())
+	req.Header.Set("User-Agent", internal.ProductToken())
 
 	r, err := s.client.Do(req)
 	if err != nil {
diff --git a/plugins/outputs/http/http.go b/plugins/outputs/http/http.go
index 746cba346..66fc0d5f0 100644
--- a/plugins/outputs/http/http.go
+++ b/plugins/outputs/http/http.go
@@ -193,7 +193,7 @@ func (h *HTTP) write(reqBody []byte) error {
 		req.SetBasicAuth(h.Username, h.Password)
 	}
 
-	req.Header.Set("User-Agent", "Telegraf/"+internal.Version())
+	req.Header.Set("User-Agent", internal.ProductToken())
 	req.Header.Set("Content-Type", defaultContentType)
 	if h.ContentEncoding == "gzip" {
 		req.Header.Set("Content-Encoding", "gzip")
diff --git a/plugins/outputs/http/http_test.go b/plugins/outputs/http/http_test.go
index 0decdf024..abcf2db33 100644
--- a/plugins/outputs/http/http_test.go
+++ b/plugins/outputs/http/http_test.go
@@ -431,11 +431,9 @@ func TestDefaultUserAgent(t *testing.T) {
 	u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
 	require.NoError(t, err)
 
-	internal.SetVersion("1.2.3")
-
 	t.Run("default-user-agent", func(t *testing.T) {
 		ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			require.Equal(t, "Telegraf/1.2.3", r.Header.Get("User-Agent"))
+			require.Equal(t, internal.ProductToken(), r.Header.Get("User-Agent"))
 			w.WriteHeader(http.StatusOK)
 		})
 
diff --git a/plugins/outputs/influxdb/http.go b/plugins/outputs/influxdb/http.go
index 5f25572d3..6656a8ee6 100644
--- a/plugins/outputs/influxdb/http.go
+++ b/plugins/outputs/influxdb/http.go
@@ -129,7 +129,7 @@ func NewHTTPClient(config HTTPConfig) (*httpClient, error) {
 
 	userAgent := config.UserAgent
 	if userAgent == "" {
-		userAgent = "Telegraf/" + internal.Version()
+		userAgent = internal.ProductToken()
 	}
 
 	if config.Headers == nil {
diff --git a/plugins/outputs/influxdb/http_test.go b/plugins/outputs/influxdb/http_test.go
index a59fadaf4..4b323c327 100644
--- a/plugins/outputs/influxdb/http_test.go
+++ b/plugins/outputs/influxdb/http_test.go
@@ -248,8 +248,6 @@ func TestHTTP_Write(t *testing.T) {
 	u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
 	require.NoError(t, err)
 
-	internal.SetVersion("1.2.3")
-
 	tests := []struct {
 		name             string
 		config           influxdb.HTTPConfig
@@ -310,7 +308,7 @@ func TestHTTP_Write(t *testing.T) {
 				Log:      testutil.Logger{},
 			},
 			queryHandlerFunc: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
-				require.Equal(t, r.Header.Get("User-Agent"), "Telegraf/1.2.3")
+				require.Equal(t, internal.ProductToken(), r.Header.Get("User-Agent"))
 				w.WriteHeader(http.StatusNoContent)
 			},
 		},
diff --git a/plugins/outputs/influxdb_v2/http.go b/plugins/outputs/influxdb_v2/http.go
index b94df889b..3034207dd 100644
--- a/plugins/outputs/influxdb_v2/http.go
+++ b/plugins/outputs/influxdb_v2/http.go
@@ -84,7 +84,7 @@ func NewHTTPClient(config *HTTPConfig) (*httpClient, error) {
 
 	userAgent := config.UserAgent
 	if userAgent == "" {
-		userAgent = "Telegraf/" + internal.Version()
+		userAgent = internal.ProductToken()
 	}
 
 	var headers = make(map[string]string, len(config.Headers)+2)