diff --git a/build.gradle b/build.gradle
index d2ef3ac3..d0fdd12d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -229,6 +229,12 @@ task debBuild(dependsOn: shadowJar) {
                 value: debDataPath
         )
 
+        ant.replace(
+                file: "${debBuildDebianPath}/postinst",
+                token: '%DEB_CONF_FILE%',
+                value: "${debConfPath}/mxisd.yaml"
+        )
+
         ant.chmod(
                 file: "${debBuildDebianPath}/postinst",
                 perm: 'a+x'
diff --git a/src/debian/postinst b/src/debian/postinst
index 7b06340c..b8d9b2b6 100755
--- a/src/debian/postinst
+++ b/src/debian/postinst
@@ -11,3 +11,9 @@ ln -sfT /usr/lib/mxisd/mxisd /usr/bin/mxisd
 
 # Enable systemd service
 systemctl enable mxisd.service
+
+# If we already have a config file setup, we attempt to run mxisd automatically
+# Specifically targeted at upgrades where the service needs to be restarted
+if [ -f "%DEB_CONF_FILE%" ]; then
+    systemctl restart mxisd.service
+fi