diff --git a/flake.lock b/flake.lock
index e9df23dd..9086f0b6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -52,11 +52,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1594117931,
-        "narHash": "sha256-x7nZvITCLJiK7miPXU6yl2zdq+MlhjHicggfvjLguFg=",
+        "lastModified": 1599903709,
+        "narHash": "sha256-tinVKY7zRdSXmVOp7BAulNtIb2iP5nvNp5UAxihKXNI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "c9d124e39dbeefc53c7b3e09fbfc2c26bcbd4845",
+        "rev": "252bfe0107587d40092057f338e9ffcf7bbd90cb",
         "type": "github"
       },
       "original": {
diff --git a/src/hydra-eval-jobs/hydra-eval-jobs.cc b/src/hydra-eval-jobs/hydra-eval-jobs.cc
index 81012b56..4f2ae3be 100644
--- a/src/hydra-eval-jobs/hydra-eval-jobs.cc
+++ b/src/hydra-eval-jobs/hydra-eval-jobs.cc
@@ -211,7 +211,7 @@ static void worker(
                 if (gcRootsDir != "" && localStore) {
                     Path root = gcRootsDir + "/" + std::string(baseNameOf(drvPath));
                     if (!pathExists(root))
-                        localStore->addPermRoot(localStore->parseStorePath(drvPath), root, false);
+                        localStore->addPermRoot(localStore->parseStorePath(drvPath), root);
                 }
 
                 nlohmann::json out;