diff --git a/internal/ui/static_javascript.go b/internal/ui/static_javascript.go
index f2fb89fc..36061ce9 100644
--- a/internal/ui/static_javascript.go
+++ b/internal/ui/static_javascript.go
@@ -6,6 +6,7 @@ package ui // import "miniflux.app/v2/internal/ui"
 import (
 	"fmt"
 	"net/http"
+	"strings"
 	"time"
 
 	"miniflux.app/v2/internal/http/request"
@@ -15,6 +16,9 @@ import (
 	"miniflux.app/v2/internal/ui/static"
 )
 
+const licensePrefix = "//@license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0\n"
+const licenseSuffix = "\n//@license-end"
+
 func (h *handler) showJavascript(w http.ResponseWriter, r *http.Request) {
 	filename := request.RouteStringParam(r, "name")
 	etag, found := static.JavascriptBundleChecksums[filename]
@@ -31,6 +35,10 @@ func (h *handler) showJavascript(w http.ResponseWriter, r *http.Request) {
 			contents = append([]byte(variables), contents...)
 		}
 
+		// cloning the prefix since `append` mutates its first argument
+		contents = append([]byte(strings.Clone(licensePrefix)), contents...)
+		contents = append(contents, []byte(licenseSuffix)...)
+
 		b.WithHeader("Content-Type", "text/javascript; charset=utf-8")
 		b.WithBody(contents)
 		b.Write()