diff --git a/default.nix b/default.nix
index 9232e90..a7e9985 100644
--- a/default.nix
+++ b/default.nix
@@ -11,6 +11,7 @@ let
   patched = firefox.overrideDerivation (base: {
     patches = base.patches ++ [
       ./allow-anonymous-user-style.patch
+      ./enable-legacy-addons.patch
       ./disable-datasharing-infobar.patch
       ./disable-locationservice.patch
       ./disable-sponsored-tiles.patch
diff --git a/disable-telemetry.patch b/disable-telemetry.patch
index 6631e68..82c5bcf 100644
--- a/disable-telemetry.patch
+++ b/disable-telemetry.patch
@@ -1,11 +1,6 @@
 --- a/browser/confvars.sh
 +++ b/browser/confvars.sh
-@@ -63,7 +63,11 @@
- MOZ_PROFILE_MIGRATOR=1
- 
- # Enable checking that add-ons are signed by the trusted root
--MOZ_ADDON_SIGNING=1
-+MOZ_ADDON_SIGNING=0
+@@ -67,3 +67,7 @@
  
  # Include the DevTools client, not just the server (which is the default)
  MOZ_DEVTOOLS=all
diff --git a/enable-legacy-addons.patch b/enable-legacy-addons.patch
new file mode 100644
index 0000000..0e1b3d0
--- /dev/null
+++ b/enable-legacy-addons.patch
@@ -0,0 +1,36 @@
+--- a/browser/confvars.sh
++++ b/browser/confvars.sh
+@@ -63,7 +63,8 @@
+ MOZ_PROFILE_MIGRATOR=1
+ 
+ # Enable checking that add-ons are signed by the trusted root
+-MOZ_ADDON_SIGNING=1
++MOZ_ADDON_SIGNING=0
++MOZ_ALLOW_LEGACY_EXTENSIONS=1
+ 
+ # Include the DevTools client, not just the server (which is the default)
+ MOZ_DEVTOOLS=all
+--- a/browser/app/profile/firefox.js
++++ b/browser/app/profile/firefox.js
+@@ -89,10 +89,10 @@
+ #endif
+ 
+ // Extensions that should not be flagged as legacy in about:addons
+-pref("extensions.legacy.exceptions", "{972ce4c6-7e08-4474-a285-3208198ce6fd},testpilot@cliqz.com,@testpilot-containers,jid1-NeEaf3sAHdKHPA@jetpack,@activity-streams,pulse@mozilla.com,@testpilot-addon,@min-vid,tabcentertest1@mozilla.com,snoozetabs@mozilla.com,speaktome@mozilla.com,hoverpad@mozilla.com");
++pref("extensions.legacy.exceptions", "");
+ 
+ // Require signed add-ons by default
+-pref("xpinstall.signatures.required", true);
++pref("xpinstall.signatures.required", false);
+ pref("xpinstall.signatures.devInfoURL", "https://wiki.mozilla.org/Addons/Extension_Signing");
+ 
+ // Dictionary download preference
+@@ -1568,7 +1568,7 @@
+ pref("extensions.allow-non-mpc-extensions", false);
+ #endif
+ 
+-pref("extensions.legacy.enabled", false);
++pref("extensions.legacy.enabled", true);
+ 
+ // Enable blocking of e10s and e10s-multi for add-on users on beta/release.
+ #if defined(RELEASE_OR_BETA) && !defined(MOZ_DEV_EDITION)