diff --git a/packaging/docker/centos7/build.sh b/packaging/docker/centos7/build.sh
index 94f4ed8..e2aae22 100644
--- a/packaging/docker/centos7/build.sh
+++ b/packaging/docker/centos7/build.sh
@@ -5,8 +5,8 @@ RPMBUILD=/home/pkger/rpmbuild
 PKG_DIR=/tmp/synergy-service
 
 function get_version() {
-    local file=$PKG_DIR/setup.cfg
-    export PKG_VERSION=$(grep -e "version = " $file | sed -r "s/version = ()/\1/")
+    cd $PKG_DIR
+    export PKG_VERSION=$(git tag -l "*.*.*" | sort -V | tail -1)
 }
 
 function setup() {
diff --git a/packaging/docker/ubuntu-14.04/build.sh b/packaging/docker/ubuntu-14.04/build.sh
index eaf590d..4283a3c 100644
--- a/packaging/docker/ubuntu-14.04/build.sh
+++ b/packaging/docker/ubuntu-14.04/build.sh
@@ -10,8 +10,8 @@ function copy_source() {
 }
 
 function get_version() {
-    local file=/home/pkger/python-synergy-service/setup.cfg
-    export PKG_VERSION=$(grep -e "version = " $file | sed -r "s/version = ()/\1/")
+    cd $PKG_DIR
+    export PKG_VERSION=$(git tag -l "*.*.*" | sort -V | tail -1)
 }
 
 function setup() {