diff --git a/src/c/hydra-eval-jobs.cc b/src/c/hydra-eval-jobs.cc
index b6d8ad38..89905a70 100644
--- a/src/c/hydra-eval-jobs.cc
+++ b/src/c/hydra-eval-jobs.cc
@@ -210,6 +210,7 @@ int main(int argc, char * * argv)
 
     return handleExceptions(argv[0], [&]() {
         initNix();
+        initGC();
 
         Strings searchPath;
         Path releaseExpr;