diff --git a/hosts/hydrogen/configuration.nix b/hosts/hydrogen/configuration.nix
index 462ac4c..98e7b90 100644
--- a/hosts/hydrogen/configuration.nix
+++ b/hosts/hydrogen/configuration.nix
@@ -156,6 +156,13 @@
         "DISABLE_REGISTRATION" = true;
       };
       server = { "LANDING_PAGE" = "explore"; };
+      indexer = {
+        "REPO_INDEXER_ENABLED" = true;
+        "REPO_INDEXER_PATH" = "indexers/repos.bleve";
+        "UPDATE_BUFFER_LEN" = 20;
+        "MAX_FILE_SIZE" = 1048576;
+        "REPO_INDEXER_EXCLUDE" = "node_modules/**";
+      };
       session = {
         "PROVIDER" = "db";
         "COOKIE_SECURE" = true;