diff --git a/darshan-util/pydarshan/pyproject.toml b/darshan-util/pydarshan/pyproject.toml
index b377f407f..1edc9ad5d 100644
--- a/darshan-util/pydarshan/pyproject.toml
+++ b/darshan-util/pydarshan/pyproject.toml
@@ -96,8 +96,8 @@ before-all = [
     "make install"
 ]
 before-build = [
-    "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD/darshan_install/lib",
-    "echo LD_LIBRARY_PATH=$LD_LIBRARY_PATH",
+    "export LIBRARY_PATH=$LIBRARY_PATH:$PWD/darshan_install/lib",
+    "echo LIBRARY_PATH=$LIBRARY_PATH",
     "echo PYDARSHAN_BUILD_EXT=$PYDARSHAN_BUILD_EXT",
     "ls $PWD/darshan_install/lib"
 ]