diff --git a/versions.gradle b/versions.gradle
index 065da6b64..6f33bccd4 100644
--- a/versions.gradle
+++ b/versions.gradle
@@ -24,7 +24,7 @@ ext.deps = [:]
 def versions = [:]
 // GeckoView versions can be found here:
 // https://maven.mozilla.org/?prefix=maven2/org/mozilla/geckoview/
-versions.gecko_view = "65.0.20181201054936"
+versions.gecko_view = "66.0.20181217093726"
 versions.android_components = "0.31.0"
 versions.mozilla_speech = "1.0.6"
 versions.google_vr = "1.170.0"