diff --git a/sphinx/sphinx.nuspec b/sphinx/sphinx.nuspec
index 8dd4f82..430550e 100644
--- a/sphinx/sphinx.nuspec
+++ b/sphinx/sphinx.nuspec
@@ -4,7 +4,7 @@
   <metadata>
     <id>sphinx</id>
     <title>Sphinx</title>
-    <version>3.4.2</version>
+    <version>3.4.3</version>
     <authors>Georg Brandl</authors>
     <owners>naveen521kk</owners>
     <projectUrl>https://www.sphinx-doc.org</projectUrl>
diff --git a/sphinx/tools/chocolateyinstall.ps1 b/sphinx/tools/chocolateyinstall.ps1
index d06901f..602d162 100644
--- a/sphinx/tools/chocolateyinstall.ps1
+++ b/sphinx/tools/chocolateyinstall.ps1
@@ -1,6 +1,6 @@
 Update-SessionEnvironment
 
-$version = '3.4.2'
+$version = '3.4.3'
 
 $proxy = Get-EffectiveProxy
 if ($proxy) {