diff --git a/src/include/gridfire/utils/hashing.h b/src/include/gridfire/utils/hashing.h
new file mode 100644
index 00000000..5dcb2df8
--- /dev/null
+++ b/src/include/gridfire/utils/hashing.h
@@ -0,0 +1,8 @@
+//
+// Created by Emily Boudreaux on 10/22/25.
+//
+
+#ifndef GRIDFIRE_HASHING_H
+#define GRIDFIRE_HASHING_H
+
+#endif //GRIDFIRE_HASHING_H
diff --git a/subprojects/fourdst.wrap b/subprojects/fourdst.wrap
index d772afb0..ebf8dfbb 100644
--- a/subprojects/fourdst.wrap
+++ b/subprojects/fourdst.wrap
@@ -1,4 +1,4 @@
 [wrap-git]
 url = https://github.com/4D-STAR/fourdst
-revision = v0.8.3
+revision = v0.8.4
 depth = 1