diff --git a/env.sh b/env.sh
index 20e6fa5..d08f02d 100644
--- a/env.sh
+++ b/env.sh
@@ -1,3 +1,4 @@
+export STD_CELL_LIBRARY=sky130_fd_sc_ls
 export STDCELLLIB=/home/philipp/libresilicon/StdCellLib
 export OPENLANE_ROOT=$(readlink -f $(pwd)/../openlane )
 export OPENLANE_TAG=v0.15