diff --git a/tests/config/default_2022Q4.json b/tests/config/default_2022Q4.json
index f2929e4..1100b8b 100644
--- a/tests/config/default_2022Q4.json
+++ b/tests/config/default_2022Q4.json
@@ -3,7 +3,9 @@
   "pactaDataURL": "https://pactadatadev.file.core.windows.net/workflow-data-preparation-outputs/2022Q4_20240426T113151Z",
   "parameters": {
     "portfolio": {
-      "files": "default_portfolio.csv",
+      "files": [
+        "default_portfolio.csv"
+      ],
       "holdingsDate": "2023-12-31"
     },
     "inherit": "2022Q4"
diff --git a/tests/config/default_2023Q4.json b/tests/config/default_2023Q4.json
index d342918..c474d5e 100644
--- a/tests/config/default_2023Q4.json
+++ b/tests/config/default_2023Q4.json
@@ -3,7 +3,9 @@
   "pactaDataURL": "https://pactadatadev.file.core.windows.net/workflow-data-preparation-outputs/2023Q4_20240424T120055Z",
   "parameters": {
     "portfolio": {
-      "files": "default_portfolio.csv",
+      "files": [
+        "default_portfolio.csv"
+      ],
       "holdingsDate": "2023-12-31"
     },
     "inherit": "2023Q4"
diff --git a/tests/config/full_params_2023Q4.json b/tests/config/full_params_2023Q4.json
index ca01611..969f581 100644
--- a/tests/config/full_params_2023Q4.json
+++ b/tests/config/full_params_2023Q4.json
@@ -4,7 +4,9 @@
   "parameters": {
     "portfolio": {
       "holdingsDate": "2023-12-31",
-      "files": "default_portfolio.csv",
+      "files": [
+        "default_portfolio.csv"
+      ],
       "name": "Default Portfolio"
     },
     "analysis": {