diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6925e41..44df711a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ cmake_minimum_required(VERSION 3.20)
 # The major, minor, and micro version numbers of the project.
 set(JAS_VERSION_MAJOR 4)
 set(JAS_VERSION_MINOR 2)
-set(JAS_VERSION_PATCH 0)
+set(JAS_VERSION_PATCH 1)
 
 # The shared library versioning information.
 # Guidelines on how to change this information can be found below.
diff --git a/NEWS.txt b/NEWS.txt
index a74e6e0b..db4d5e8d 100644
--- a/NEWS.txt
+++ b/NEWS.txt
@@ -1,3 +1,8 @@
+4.2.1 (2024-02-18)
+==================
+
+* Fix a build problem for the DJGPP/MS-DOS environment (#372).
+
 4.2.0 (2024-02-05)
 ==================