diff --git a/lambdas/postprocess/requirements.txt b/lambdas/postprocess/requirements.txt
new file mode 100644
index 0000000..08c4aa8
--- /dev/null
+++ b/lambdas/postprocess/requirements.txt
@@ -0,0 +1,4 @@
+fastparquet==2024.11.0
+pandas==2.3.2
+netcdf==1.7.2
+xarray==2025.9.0