diff --git a/resources/scripts/github-actions/build-windows.ps1 b/resources/scripts/github-actions/build-windows.ps1
index 6553c9b2b..47399ad24 100755
--- a/resources/scripts/github-actions/build-windows.ps1
+++ b/resources/scripts/github-actions/build-windows.ps1
@@ -133,6 +133,9 @@ Copy-Item -Path "$openssl_base_path\bin\libssl*.dll" -Destination ".\app\"
 Copy-Item -Path "$maria_path\lib\libmariadb.dll" -Destination ".\app\"
 Copy-Item -Path "$qt_sqldrivers_path\plugins\sqldrivers\qsqlmysql.dll" -Destination ".\app\sqldrivers\" -Force
 
+# Copy zlib.
+Copy-Item -Path "$zlib_path\zlib1.dll" -Destination ".\app\"
+
 # Copy debug symbols for devbuilds.
 if ($git_tag -eq "devbuild") {
   Copy-Item -Path ".\src\librssguard\rssguard.pdb" -Destination ".\app\"