diff --git a/arduino/security/signatures.go b/arduino/security/signatures.go
index dfb5a57b0dd..7a0d619e8b9 100644
--- a/arduino/security/signatures.go
+++ b/arduino/security/signatures.go
@@ -42,6 +42,7 @@ func VerifyArduinoDetachedSignature(targetPath *paths.Path, signaturePath *paths
 	if err != nil {
 		panic("could not find bundled signature keys")
 	}
+	defer arduinoKeyringFile.Close()
 	return VerifySignature(targetPath, signaturePath, arduinoKeyringFile)
 }
 
diff --git a/i18n/cmd/po/parser.go b/i18n/cmd/po/parser.go
index 0d5ebf85e63..b367f9f1eab 100644
--- a/i18n/cmd/po/parser.go
+++ b/i18n/cmd/po/parser.go
@@ -31,6 +31,7 @@ func Parse(filename string) MessageCatalog {
 	}
 
 	file, err := os.Open(filename)
+	defer file.Close()
 
 	if err != nil {
 		fmt.Println(err.Error())