diff --git a/ChangeLog b/ChangeLog
index 5d5f3fd..119a739 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-2023.205:
+2023.206: 3.0.17
+	- Add tests for default record length and encoding.
+	- Document versioning schema as semantic versioning.
 	- Add const qualifiers to packing routines that do not modify the
 	passed MS3Record structure.
 
diff --git a/libmseed.h b/libmseed.h
index ffdcbbf..4c60f7c 100644
--- a/libmseed.h
+++ b/libmseed.h
@@ -28,8 +28,8 @@
 extern "C" {
 #endif
 
-#define LIBMSEED_VERSION "3.0.16"    //!< Library version
-#define LIBMSEED_RELEASE "2023.204"  //!< Library release date
+#define LIBMSEED_VERSION "3.0.17"    //!< Library version
+#define LIBMSEED_RELEASE "2023.206"  //!< Library release date
 
 /** @defgroup io-functions File and URL I/O */
 /** @defgroup miniseed-record Record Handling */