diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3b46b61..e8c695a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -40,9 +40,6 @@ jobs:
       - run: opam exec -- dune runtest -p trace-tef,trace-fuchsia
 
       # with depopts
-      - run: opam install thread-local-storage lwt
+      - run: opam install thread-local-storage lwt mtime
       - run: opam exec -- dune build '@install' -p trace,trace-tef,trace-fuchsia
-
-      - run: opam install mtime
-      - run: opam exec -- dune build '@install' -p trace,trace-tef,trace-fuchsia
-
+      - run: opam exec -- dune runtest -p trace,trace-tef,trace-fuchsia