diff --git a/config/training/dqn-smoketest.toml b/config/training/dqn-smoketest.toml
index ec7924ab0..c03875057 100644
--- a/config/training/dqn-smoketest.toml
+++ b/config/training/dqn-smoketest.toml
@@ -37,7 +37,7 @@ count_bonus_coefficient = 0.1
 q_gap_threshold = 0.05
 
 [replay_buffer]
-buffer_size = 256
+buffer_size = 1024
 min_replay_size = 64
 regime_replay_decay = 0.3