diff --git a/libjpegqs.h b/libjpegqs.h
index dbd6955..c3a125d 100644
--- a/libjpegqs.h
+++ b/libjpegqs.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020-2021 Ilya Kurdyukov
+ * Copyright (C) 2020-2023 Ilya Kurdyukov
  *
  * JPEG Quant Smooth API definitions
  */
@@ -35,8 +35,8 @@ enum {
 #define JPEGQS_ATTR
 #endif
 
-#define JPEGQS_VERSION "1.20210408"
-#define JPEGQS_COPYRIGHT "Copyright (C) 2020-2021 Ilya Kurdyukov"
+#define JPEGQS_VERSION "1.20230818"
+#define JPEGQS_COPYRIGHT "Copyright (C) 2020-2023 Ilya Kurdyukov"
 
 typedef struct {
 	int flags, niter, threads, progprec;
diff --git a/quantsmooth.h b/quantsmooth.h
index 6db27a9..8411b6a 100644
--- a/quantsmooth.h
+++ b/quantsmooth.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016-2022 Ilya Kurdyukov
+ * Copyright (C) 2016-2023 Ilya Kurdyukov
  *
  * This file is part of jpeg quantsmooth
  *