diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b92b4e75c..8014f44a2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,5 +19,5 @@ jobs:
         make
         sudo make install
     - run: g++ -v
-    - run: g++ -fsanitize=address /usr/local/lib/libgtest_main.a /usr/local/lib/libgtest.a -o stim_test
+    - run: g++ -fsanitize=address /usr/local/lib/libgtest_main.a /usr/local/lib/libgtest.a -lpthread -o stim_test
     - run: ./stim_test