diff --git a/src/pygef/shim.py b/src/pygef/shim.py
index 2525b26b..4edc9649 100644
--- a/src/pygef/shim.py
+++ b/src/pygef/shim.py
@@ -105,7 +105,7 @@ def gef_cpt_to_cpt_data(gef_cpt: _GefCpt) -> CPTData:
     kwargs["bro_id"] = None
     kwargs["alias"] = gef_cpt.test_id
     kwargs["data"] = gef_cpt.df
-    kwargs["research_report_date"] = None
+    kwargs["research_report_date"] = gef_cpt.file_date
     kwargs["cpt_standard"] = None
     kwargs["groundwater_level"] = gef_cpt.groundwater_level
     kwargs["dissipationtest_performed"] = None
@@ -193,7 +193,7 @@ def gef_bore_to_bore_data(gef_bore: _GefBore) -> BoreData:
     kwargs["bro_id"] = None
     kwargs["alias"] = gef_bore.test_id
     kwargs["groundwater_level"] = None
-    kwargs["research_report_date"] = None
+    kwargs["research_report_date"] = gef_bore.file_date
     kwargs["description_procedure"] = "unknown"
     kwargs["delivered_vertical_position_offset"] = gef_bore.zid
     kwargs["delivered_vertical_position_datum"] = "unknown"
diff --git a/tests/test_shim.py b/tests/test_shim.py
index 403ab7db..6cc6fb2a 100644
--- a/tests/test_shim.py
+++ b/tests/test_shim.py
@@ -1,3 +1,5 @@
+from datetime import datetime
+
 import pytest
 from lxml.etree import XMLSyntaxError
 
@@ -49,7 +51,7 @@ def test_gef_to_cpt_data(_type, cpt_gef_1, cpt_gef_1_bytes, cpt_gef_1_string) ->
         "final_depth": 20.0,
         "predrilled_depth": 0.0,
         "quality_class": QualityClass(2),
-        "research_report_date": None,
+        "research_report_date": datetime(2019, 2, 13).date(),
         "standardized_location": None,
         "delivered_location": Location(
             srs_name="urn:ogc:def:crs:EPSG::28992", x=79578.38, y=424838.97