diff --git a/Utils/known-sets.txt b/Utils/known-sets.txt
index c332fc24f24..fd8f42cac65 100644
--- a/Utils/known-sets.txt
+++ b/Utils/known-sets.txt
@@ -63,6 +63,7 @@ Conflux|conflux|
 Alara Reborn|alarareborn|
 Zendikar|zendikar|
 Worldwake|worldwake|
+Return to Ravnica|returntoravnica|
 Rise of the Eldrazi|riseoftheeldrazi|
 Scars of Mirrodin|scarsofmirrodin|
 Mirrodin Besieged|mirrodinbesieged|
diff --git a/Utils/mtg-sets-data.txt b/Utils/mtg-sets-data.txt
index 541c1f499cc..860d48e8389 100644
--- a/Utils/mtg-sets-data.txt
+++ b/Utils/mtg-sets-data.txt
@@ -81,6 +81,7 @@ Portal Three Kingdoms|PTK|
 Premium Deck Series: Fire and Lightning|PD2|
 Premium Deck Series: Slivers|PDS|
 Ravnica: City of Guilds|RAV|
+Return to Ravnica|RTR|
 Rise of the Eldrazi|ROE|
 Scars of Mirrodin|SOM|
 Scourge|SCG|