diff --git a/MANIFEST.in b/MANIFEST.in
index 29cb6706..5a13e98a 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -4,3 +4,4 @@ include proj_descr.md
 include oda_api/pkg_info.json
 include tests/observation_yaml_dummy_files/*
 include tests/test_data/*
+include tests/conftest.py
diff --git a/pyproject.toml b/pyproject.toml
index 1650d5f6..23e873e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
     "astropy>=3.2,<=6.1.4",
     "json_tricks",
     "matplotlib",
-    "numpy",
+    "numpy<2.0",
     "jsonschema",
     "pyjwt",
     "astroquery",
@@ -37,7 +37,8 @@ dependencies = [
 test = [
     "pytest-xdist[psutil]",
     "astroquery>=0.4.4",
-    "sentry_sdk"
+    "sentry_sdk",
+    "cdci_data_analysis>=1.3.5"
 ]
 extra-test = [
     "pytest-xdist[psutil]",