diff --git a/hosts/hydra/hydra.nix b/hosts/hydra/hydra.nix
index 4e84f97d..06ca2647 100644
--- a/hosts/hydra/hydra.nix
+++ b/hosts/hydra/hydra.nix
@@ -97,7 +97,7 @@
           binary_cache_secret_key_file = ${key}
           evaluator_workers = 4
           evaluator_max_memory_size = 2048
-          max_output_size = ${toString (4*1024*1024)} # sd card and raw images
+          max_output_size = ${toString (4*1024*1024*1024)} # sd card and raw images
           store_uri = auto?secret-key=${key}&write-nar-listing=1&ls-compression=zstd&log-compression=zstd
           upload_logs_to_binary_cache = true
         '';