diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 1ea05f4..2b88db7 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -1,3 +1,7 @@
+# Version 20.0.0.1
+
+**[HOTFIX]** A fix was applied to stop incorrect clock frequences being reported due to rounding errors.
+
 # Version 20.0.0.0
 
 Welcome to our first "official" gem5 release!
diff --git a/src/Doxyfile b/src/Doxyfile
index 5b18e97..1788900 100644
--- a/src/Doxyfile
+++ b/src/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = v19.0.0.0
+PROJECT_NUMBER         = v20.0.0.1
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put. 
diff --git a/src/base/version.cc b/src/base/version.cc
index c5fbca0..2040268 100644
--- a/src/base/version.cc
+++ b/src/base/version.cc
@@ -26,4 +26,4 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-const char *gem5Version = "20.0.0.0";
+const char *gem5Version = "20.0.0.1";