diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index f607dda4..a8dce3c3 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.1.0
+current_version = 3.1.1
 commit = False
 tag = False
 
diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index bafd5027..a20825c5 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -65,7 +65,7 @@ body:
       label: GSD
       description: |
         What version of GSD are you using?
-      placeholder: 3.1.0
+      placeholder: 3.1.1
     validations:
       required: true
   - type: markdown
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 5dea5d71..56268de0 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,12 +10,12 @@ Change Log
 3.x
 ---
 
-3.1.1 (2023-??-??)
+3.1.1 (2023-08-03)
 ^^^^^^^^^^^^^^^^^^
 
 *Fixed:*
 
-* Raise a ``FileExistsError`` when opening a file that already exists with ``mode = 'x'``
+* Raise a ``FileExistsError`` when opening a file that already exists with ``mode = 'x'``.
 
 3.1.0 (2023-07-28)
 ^^^^^^^^^^^^^^^^^^
diff --git a/Doxyfile b/Doxyfile
index 9de433ff..9dd17747 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -5,7 +5,7 @@
 #---------------------------------------------------------------------------
 DOXYFILE_ENCODING      = UTF-8
 PROJECT_NAME           = "GSD"
-PROJECT_NUMBER         = v3.1.0
+PROJECT_NUMBER         = v3.1.1
 PROJECT_BRIEF          = "General simulation data"
 PROJECT_LOGO           =
 OUTPUT_DIRECTORY       = devdoc
diff --git a/gsd/pygsd.py b/gsd/pygsd.py
index d2eef66f..86e45f91 100644
--- a/gsd/pygsd.py
+++ b/gsd/pygsd.py
@@ -37,7 +37,7 @@
 from collections import namedtuple
 import sys
 
-version = "3.1.0"
+version = "3.1.1"
 
 logger = logging.getLogger('gsd.pygsd')
 
diff --git a/gsd/version.py b/gsd/version.py
index a98f0844..507771d0 100644
--- a/gsd/version.py
+++ b/gsd/version.py
@@ -9,7 +9,7 @@
                    not the file layer version it reads/writes.
 """
 
-version = "3.1.0"
+version = "3.1.1"
 
 __all__ = [
     'version',
diff --git a/pyproject.toml b/pyproject.toml
index 2bb32f1c..5be6b3d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 requires-python = ">=3.6"
 name = "gsd"
-version = "3.1.0"
+version = "3.1.1"
 description = "General simulation data file format."
 readme = "README.md"
 license = {text = "BSD-2-Clause"}
@@ -25,7 +25,7 @@ gsd = "gsd.__main__:main"
 [project.urls]
 Homepage = "https://gsd.readthedocs.io"
 Documentation = "https://gsd.readthedocs.io"
-Download = "https://github.com/glotzerlab/gsd/releases/download/v3.1.0/gsd-3.1.0.tar.gz"
+Download = "https://github.com/glotzerlab/gsd/releases/download/v3.1.1/gsd-3.1.1.tar.gz"
 Source = "https://github.com/glotzerlab/gsd"
 Issues = "https://github.com/glotzerlab/gsd/issues"