diff --git a/src/frontend/inpc_probe.c b/src/frontend/inpc_probe.c
index db7a87540..dd61de7af 100644
--- a/src/frontend/inpc_probe.c
+++ b/src/frontend/inpc_probe.c
@@ -1,5 +1,5 @@
 /* ngspice file inpc_probe.c
-   Copyright Holger Vogt 2021
+   Copyright Holger Vogt 2021-2024
    License: BSD 3-clause
  */