diff --git a/user.js b/user.js
index c5a551c..3b73c70 100644
--- a/user.js
+++ b/user.js
@@ -34,7 +34,16 @@ user_pref("extensions.pocket.enabled", false);
 user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false);
 user_pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includePocket", false);
 
+// Prefetching
+user_pref("network.dns.disablePrefetch", true);
+user_pref("network.dns.disablePrefetchFromHTTPS", true);
+user_pref("network.http.speculative-parallel-limit", "0");
+user_pref("network.predictor.enabled", false);
+user_pref("network.predictor.enable-prefetch", false);
+user_pref("network.prefetch-next", false);
+
 // Privacy
+user_pref("app.shield.optoutstudies.enabled", false);
 user_pref("browser.contentblocking.category", "strict");
 user_pref("privacy.donottrackheader.enabled", true);
 user_pref("privacy.trackingprotection.enabled", true);