diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d7eaf6..4f84c32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.40.0
+
+- `Specfile()` has a new `sanitize` option that enables best effort sanitization of potentially dangerous constructs such as shell expansions and unsafe Lua macros before they are passed to RPM for parsing. (#519)
+- Fixed incorrect parsing of nested macros. (#522)
+
 # 0.39.1
 
 - Fixed whitespace padding of day of month in changelog entries. (#511)
diff --git a/centos-integration-sig/python-specfile.spec b/centos-integration-sig/python-specfile.spec
index fe034c1..e54a3c8 100644
--- a/centos-integration-sig/python-specfile.spec
+++ b/centos-integration-sig/python-specfile.spec
@@ -7,7 +7,7 @@ Main focus is on modifying existing spec files, any change should result
 in a minimal diff.}
 
 
-%global base_version 0.39.1
+%global base_version 0.40.0
 #global prerelease   rc1
 
 %global package_version %{base_version}%{?prerelease:~%{prerelease}}
@@ -81,6 +81,9 @@ sed -i 's/setuptools_scm\[toml\]>=7/setuptools_scm[toml]/' pyproject.toml
 
 
 %changelog
+* Mon Mar 09 2026 Packit Team <hello@packit.dev> - 0.40.0-1
+- New upstream release 0.40.0
+
 * Sat Feb 14 2026 Packit Team <hello@packit.dev> - 0.39.1-1
 - New upstream release 0.39.1
 
diff --git a/epel8/python-specfile.spec b/epel8/python-specfile.spec
index 0497f9e..095ecea 100644
--- a/epel8/python-specfile.spec
+++ b/epel8/python-specfile.spec
@@ -4,7 +4,7 @@ Main focus is on modifying existing spec files, any change should result
 in a minimal diff.}
 
 
-%global base_version 0.39.1
+%global base_version 0.40.0
 #global prerelease   rc1
 
 %global package_version %{base_version}%{?prerelease:~%{prerelease}}
@@ -72,6 +72,9 @@ rm -rf specfile.egg-info
 
 
 %changelog
+* Mon Mar 09 2026 Packit Team <hello@packit.dev> - 0.40.0-1
+- New upstream release 0.40.0
+
 * Sat Feb 14 2026 Packit Team <hello@packit.dev> - 0.39.1-1
 - New upstream release 0.39.1
 
diff --git a/fedora/python-specfile.spec b/fedora/python-specfile.spec
index 3f419bc..be84bba 100644
--- a/fedora/python-specfile.spec
+++ b/fedora/python-specfile.spec
@@ -7,7 +7,7 @@ Main focus is on modifying existing spec files, any change should result
 in a minimal diff.}
 
 
-%global base_version 0.39.1
+%global base_version 0.40.0
 #global prerelease   rc1
 
 %global package_version %{base_version}%{?prerelease:~%{prerelease}}
@@ -81,6 +81,9 @@ sed -i 's/setuptools_scm\[toml\]>=7/setuptools_scm[toml]/' pyproject.toml
 
 
 %changelog
+* Mon Mar 09 2026 Packit Team <hello@packit.dev> - 0.40.0-1
+- New upstream release 0.40.0
+
 * Sat Feb 14 2026 Packit Team <hello@packit.dev> - 0.39.1-1
 - New upstream release 0.39.1