diff --git a/.github/workflows/run-test.yml b/.github/workflows/run-test.yml
index b366129..c120164 100644
--- a/.github/workflows/run-test.yml
+++ b/.github/workflows/run-test.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Run pytest
         run: |
           pip install pytest pytest-cov
-          pip install lightfm jaxlib jax dm-haiku optax
+          pip install lightfm jaxlib==0.1.57 jax dm-haiku optax
           pytest --cov=./irspack tests/
       - name: Generate coverage (ubuntu)
         run: |
diff --git a/cpp_source/util.hpp b/cpp_source/util.hpp
index 25d9985..ecd3574 100644
--- a/cpp_source/util.hpp
+++ b/cpp_source/util.hpp
@@ -2,7 +2,6 @@
 #include <Eigen/Core>
 #include <Eigen/Sparse>
 #include <atomic>
-#include <bits/stdint-intn.h>
 #include <cstddef>
 #include <future>
 #include <iostream>