diff --git a/CITATION.cff b/CITATION.cff
index 6f2774cd4b5..afb385b533a 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -2,8 +2,8 @@ cff-version: 1.2.0
 message: If you use this software, please cite the software itself.
 type: software
 title: MODFLOW 6 Modular Hydrologic Model
-version: 6.5.0.dev0
-date-released: '2023-07-13'
+version: 6.5.0.dev1
+date-released: '2024-02-07'
 doi: 10.5066/F76Q1VQV
 abstract: MODFLOW 6 is an object-oriented program and framework developed to provide
   a platform for supporting multiple models and multiple types of models within the
@@ -60,7 +60,7 @@ authors:
   orcid: https://orcid.org/0000-0002-2665-5078
 - family-names: Boyce
   given-names: Scott E.
-  alias: ScottBoyce 
+  alias: ScottBoyce
   affiliation: U.S. Geological Survey
   orcid: https://orcid.org/0000-0003-0626-9492
 - family-names: Banta
diff --git a/README.md b/README.md
index 4f18b5264ce..303b0f49002 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 This is the development repository for the USGS MODFLOW 6 Hydrologic Model. The  official USGS distribution is available at [USGS Release Page](https://water.usgs.gov/ogw/modflow/MODFLOW.html).
 
-### Version 6.5.0.dev0 (preliminary)
+### Version 6.5.0.dev1 (preliminary)
 
 [![GitHub release](https://img.shields.io/github/release/MODFLOW-USGS/modflow6.svg)](https://github.com/MODFLOW-USGS/modflow6/releases/latest)
 [![MODFLOW 6 continuous integration](https://github.com/MODFLOW-USGS/modflow6/actions/workflows/ci.yml/badge.svg)](https://github.com/MODFLOW-USGS/modflow6/actions/workflows/ci.yml)
diff --git a/code.json b/code.json
index 0a579a5b6e2..45049765bd2 100644
--- a/code.json
+++ b/code.json
@@ -18,9 +18,9 @@
             "email": "langevin@usgs.gov"
         },
         "laborHours": -1,
-        "version": "6.5.0.dev0",
+        "version": "6.5.0.dev1",
         "date": {
-            "metadataLastUpdated": "2023-07-13"
+            "metadataLastUpdated": "2024-02-07"
         },
         "organization": "U.S. Geological Survey",
         "permissions": {
diff --git a/doc/version.py b/doc/version.py
index 6fd599035f7..c4fda5d1f40 100644
--- a/doc/version.py
+++ b/doc/version.py
@@ -1,3 +1,3 @@
 # MODFLOW 6 version file automatically created using...update_version.py
-# created on...July 13, 2023 15:32:29
-__version__ = "6.5.0.dev0"
+# created on...February 07, 2024 21:29:25
+__version__ = "6.5.0.dev1"
diff --git a/doc/version.tex b/doc/version.tex
index 147b13cfba9..1aa74e9d7a9 100644
--- a/doc/version.tex
+++ b/doc/version.tex
@@ -1,3 +1,3 @@
-\newcommand{\modflowversion}{mf6.5.0.dev0}
-\newcommand{\modflowdate}{July 13, 2023}
+\newcommand{\modflowversion}{mf6.5.0.dev1}
+\newcommand{\modflowdate}{February 07, 2024}
 \newcommand{\currentmodflowversion}{Version \modflowversion---\modflowdate}
diff --git a/meson.build b/meson.build
index b0d8aa6676b..605420c63a0 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
   'MODFLOW 6',
   'fortran',
-  version: '6.5.0.dev0',
+  version: '6.5.0.dev1',
   license: 'CC0',
   meson_version: '>= 1.1.0',
   default_options : [
diff --git a/src/Utilities/version.f90 b/src/Utilities/version.f90
index 741c5bed516..b01704b6aa0 100644
--- a/src/Utilities/version.f90
+++ b/src/Utilities/version.f90
@@ -17,8 +17,8 @@ module VersionModule
   public
   ! -- modflow 6 version
   integer(I4B), parameter :: IDEVELOPMODE = 1
-  character(len=*), parameter :: VERSIONNUMBER = '6.5.0.dev0'
-  character(len=*), parameter :: VERSIONTAG = ' (preliminary) 07/13/2023'
+  character(len=*), parameter :: VERSIONNUMBER = '6.5.0.dev1'
+  character(len=*), parameter :: VERSIONTAG = ' (preliminary) 02/07/2024'
   character(len=40), parameter :: VERSION = VERSIONNUMBER//VERSIONTAG
   character(len=2), parameter :: MFVNAM = ' 6'
   character(len=*), parameter :: MFTITLE = &
diff --git a/version.txt b/version.txt
index 8d7edccd2da..510f24f8334 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-6.5.0.dev0
\ No newline at end of file
+6.5.0.dev1
\ No newline at end of file