diff --git a/CHANGELOG.md b/CHANGELOG.md
index f06cd86..7b6bb17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@ Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+## [0.4.1] - 2021-02-14
+
+### Changed
+- Fixed README re: read-only
+
+## [0.4.0] - 2021-02-14
+
 ### Added
 - Added --include-read-only option to support ignoring read-only file systems
 
diff --git a/README.md b/README.md
index 7db5b41..03c68db 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,10 @@ specified as such (e.g. NTFS, C:)
 systems file system with types such as tmpfs (e.g. /dev, /run, etc.) will
 be ignored. This takes precedence over any explicit includes or excludes.
 * The `--include-read-only` checks for the `ro` mount option on Linux and the
-`read-only` mount option on macOS. Support for Windows has not been implemented.
+`read-only` mount option on macOS and read-only volumes on Windows.  The
+rationale being that if a monitored system does not have write access to a file
+system, it cannot be used to create files (not the source of the problem) nor
+can it be used to clean up the file system (not a part of the solution).
 * The `--fail-on-error` option determines what occurs if the check encounters an
 error, such as `permission denied` for a file system.  If true, the check will
 exit with as a critical failure and provide the error message.  If false (the