diff --git a/docs/source/conf.py b/docs/source/conf.py
index f27bb2bf304..fb12a4f56c6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -71,7 +71,7 @@
 # The short X.Y version.
 version = "0.13"
 # The full version, including alpha/beta/rc tags.
-release = "0.13.0-dev"
+release = "0.13.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/include/openmc/version.h.in b/include/openmc/version.h.in
index 995f20c3b18..98f431288fd 100644
--- a/include/openmc/version.h.in
+++ b/include/openmc/version.h.in
@@ -3,10 +3,12 @@
 namespace openmc {
 
 // OpenMC major, minor, and release numbers
+// clang-format off
 constexpr int VERSION_MAJOR {@OPENMC_VERSION_MAJOR@};
 constexpr int VERSION_MINOR {@OPENMC_VERSION_MINOR@};
 constexpr int VERSION_RELEASE {@OPENMC_VERSION_RELEASE@};
-constexpr bool VERSION_DEV {true};
+constexpr bool VERSION_DEV {false};
 constexpr std::array<int, 3> VERSION {VERSION_MAJOR, VERSION_MINOR, VERSION_RELEASE};
+// clang-format on
 
-}
+} // namespace openmc
diff --git a/openmc/__init__.py b/openmc/__init__.py
index 06a06aacc11..d7bcdffff9c 100644
--- a/openmc/__init__.py
+++ b/openmc/__init__.py
@@ -36,4 +36,4 @@
 from openmc.model import rectangular_prism, hexagonal_prism, Model
 
 
-__version__ = '0.13.0-dev'
+__version__ = '0.13.0'