diff --git a/build/resources/deb/DEBIAN/control b/build/resources/deb/DEBIAN/control
index f553db8b..71786b43 100755
--- a/build/resources/deb/DEBIAN/control
+++ b/build/resources/deb/DEBIAN/control
@@ -1,7 +1,8 @@
 Package: sourcegit
-Version: 8.23
+Version: 2025.10
 Priority: optional
 Depends: libx11-6, libice6, libsm6, libicu | libicu76 | libicu74 | libicu72 | libicu71 | libicu70 | libicu69 | libicu68 | libicu67 | libicu66 | libicu65 | libicu63 | libicu60 | libicu57 | libicu55 | libicu52, xdg-utils
 Architecture: amd64
+Installed-Size: 60440
 Maintainer: longshuang@msn.cn
 Description: Open-source & Free Git GUI Client
diff --git a/build/scripts/package.linux.sh b/build/scripts/package.linux.sh
index 5abb058b..1b4adbdc 100755
--- a/build/scripts/package.linux.sh
+++ b/build/scripts/package.linux.sh
@@ -56,8 +56,15 @@ cp -f SourceGit/* resources/deb/opt/sourcegit
 ln -rsf resources/deb/opt/sourcegit/sourcegit resources/deb/usr/bin
 cp -r resources/_common/applications resources/deb/usr/share
 cp -r resources/_common/icons resources/deb/usr/share
-sed -i -e "s/^Version:.*/Version: $VERSION/" -e "s/^Architecture:.*/Architecture: $arch/" resources/deb/DEBIAN/control
-dpkg-deb --root-owner-group --build resources/deb "sourcegit_$VERSION-1_$arch.deb"
+# Calculate installed size in KB
+installed_size=$(du -sk resources/deb | cut -f1)
+# Update the control file
+sed -i -e "s/^Version:.*/Version: $VERSION/" \
+    -e "s/^Architecture:.*/Architecture: $arch/" \
+    -e "s/^Installed-Size:.*/Installed-Size: $installed_size/" \
+    resources/deb/DEBIAN/control
+# Build deb package with gzip compression
+dpkg-deb -Zgzip --root-owner-group --build resources/deb "sourcegit_$VERSION-1_$arch.deb"
 
 rpmbuild -bb --target="$target" resources/rpm/SPECS/build.spec --define "_topdir $(pwd)/resources/rpm" --define "_version $VERSION"
 mv "resources/rpm/RPMS/$target/sourcegit-$VERSION-1.$target.rpm" ./