--- a/toolkit/mozapps/extensions/internal/XPIProvider.jsm
+++ b/toolkit/mozapps/extensions/internal/XPIProvider.jsm
@@ -4067,72 +4067,78 @@ this.XPIProvider = {
 
     if (!addon.bootstrap) {
       throw new Error("Only restartless (bootstrap) add-ons"
                     + " can be installed from sources:", addon.id);
     }
     let installReason = BOOTSTRAP_REASONS.ADDON_INSTALL;
     let oldAddon = yield new Promise(
                    resolve => XPIDatabase.getVisibleAddonForID(addon.id, resolve));
+
+    let extraParams = {};
     if (oldAddon) {
       if (!oldAddon.bootstrap) {
         logger.warn("Non-restartless Add-on is already installed", addon.id);
         throw new Error("Non-restartless add-on with ID "
                         + oldAddon.id + " is already installed");
       } else {
         logger.warn("Addon with ID " + oldAddon.id + " already installed,"
                     + " older version will be disabled");
 
         let existingAddonID = oldAddon.id;
         let existingAddon = oldAddon._sourceBundle;
 
         // We'll be replacing a currently active bootstrapped add-on so
         // call its uninstall method
         let newVersion = addon.version;
         let oldVersion = oldAddon.version;
+
         if (Services.vc.compare(newVersion, oldVersion) >= 0) {
           installReason = BOOTSTRAP_REASONS.ADDON_UPGRADE;
         } else {
           installReason = BOOTSTRAP_REASONS.ADDON_DOWNGRADE;
         }
         let uninstallReason = installReason;
 
+        extraParams.newVersion = newVersion;
+        extraParams.oldVersion = oldVersion;
+
         if (oldAddon.active) {
           XPIProvider.callBootstrapMethod(oldAddon, existingAddon,
                                           "shutdown", uninstallReason,
-                                          { newVersion });
+                                          extraParams);
         }
         this.callBootstrapMethod(oldAddon, existingAddon,
-                                 "uninstall", uninstallReason, { newVersion });
+                                 "uninstall", uninstallReason, extraParams);
         this.unloadBootstrapScope(existingAddonID);
         flushChromeCaches();
       }
     } else {
       addon.installDate = Date.now();
     }
 
     let file = addon._sourceBundle;
 
     XPIProvider._addURIMapping(addon.id, file);
-    XPIProvider.callBootstrapMethod(addon, file, "install", installReason);
+    XPIProvider.callBootstrapMethod(addon, file, "install", installReason, extraParams);
     addon.state = AddonManager.STATE_INSTALLED;
     logger.debug("Install of temporary addon in " + aFile.path + " completed.");
     addon.visible = true;
     addon.enabled = true;
     addon.active = true;
 
     addon = XPIDatabase.addAddonMetadata(addon, file.persistentDescriptor);
 
     XPIStates.addAddon(addon);
     XPIDatabase.saveChanges();
     XPIStates.save();
 
     AddonManagerPrivate.callAddonListeners("onInstalling", addon.wrapper,
                                            false);
-    XPIProvider.callBootstrapMethod(addon, file, "startup", installReason);
+    XPIProvider.callBootstrapMethod(addon, file, "startup", installReason, extraParams);
     AddonManagerPrivate.callInstallListeners("onExternalInstall",
                                              null, addon.wrapper,
                                              oldAddon ? oldAddon.wrapper : null,
                                              false);
     AddonManagerPrivate.callAddonListeners("onInstalled", addon.wrapper);
 
     // Notify providers that a new theme has been enabled.
     if (isTheme(addon.type))

--- a/toolkit/mozapps/extensions/test/xpcshell/test_temporary.js
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_temporary.js
@@ -502,20 +502,22 @@ add_task(function*() {
 
   const uninstall = yield onUninstall;
   equal(uninstall.data.version, "1.0");
   equal(uninstall.reason, BOOTSTRAP_REASONS.ADDON_UPGRADE);
 
   const install = yield onInstall;
   equal(install.data.version, "2.0");
   equal(install.reason, BOOTSTRAP_REASONS.ADDON_UPGRADE);
+  equal(install.data.oldVersion, "1.0");
 
   const startup = yield onStartup;
   equal(startup.data.version, "2.0");
   equal(startup.reason, BOOTSTRAP_REASONS.ADDON_UPGRADE);
+  equal(startup.data.oldVersion, "1.0");
 
   const addon = yield promiseAddonByID(ID);
   addon.uninstall();
 
   unpackedAddon.remove(true);
   yield promiseRestartManager();
 });