diff --git a/.github/workflows/4.a.1-generate-webapi-client-java.yaml b/.github/workflows/4.a.1-generate-webapi-client-java.yaml
index 08a24863a..dfc9e374e 100644
--- a/.github/workflows/4.a.1-generate-webapi-client-java.yaml
+++ b/.github/workflows/4.a.1-generate-webapi-client-java.yaml
@@ -18,6 +18,9 @@ jobs:
         image: ${{ inputs.image }}
         ports:
           - 8080:8080
+        env:
+          DataSources__EmissionsDataSource: Json
+          DataSources__Configurations__Json__Type: JSON
         options: >-
           --health-cmd "curl -sS http://localhost:8080/health"
           --health-interval 3s
diff --git a/.github/workflows/4.a.1-generate-webapi-client-npm.yaml b/.github/workflows/4.a.1-generate-webapi-client-npm.yaml
index e456f4b05..dfc7db9b5 100644
--- a/.github/workflows/4.a.1-generate-webapi-client-npm.yaml
+++ b/.github/workflows/4.a.1-generate-webapi-client-npm.yaml
@@ -18,6 +18,9 @@ jobs:
         image: ${{ inputs.image }}
         ports:
           - 8080:8080
+        env:
+          DataSources__EmissionsDataSource: Json
+          DataSources__Configurations__Json__Type: JSON
         options: >-
           --health-cmd "curl -sS http://localhost:8080/health"
           --health-interval 3s
diff --git a/.github/workflows/detect-webapi-version.yaml b/.github/workflows/detect-webapi-version.yaml
index e0b114781..e69d9697f 100644
--- a/.github/workflows/detect-webapi-version.yaml
+++ b/.github/workflows/detect-webapi-version.yaml
@@ -40,6 +40,9 @@ jobs:
         image: ${{ needs.make-image-name-for-pull.outputs.image }}
         ports:
           - 8080:8080
+        env:
+          DataSources__EmissionsDataSource: Json
+          DataSources__Configurations__Json__Type: JSON
         options: >-
           --health-cmd "curl -sS http://localhost:8080/health"
           --health-interval 3s