diff --git a/.github/workflows/schematic-schema-convert.yml b/.github/workflows/schematic-schema-convert.yml
index 9e80651..c450a0d 100644
--- a/.github/workflows/schematic-schema-convert.yml
+++ b/.github/workflows/schematic-schema-convert.yml
@@ -12,7 +12,8 @@ on:
 
 env:
   schema_filename: nf_research_tools.rdb.model.csv
-  
+  SCHEMATIC_VERSION: 24.7.2 # please update .devcontainer as well until this can be set globally somewhere...  
+
 jobs:
   build:
     runs-on: ubuntu-22.04
@@ -28,13 +29,18 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
           persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal access token.
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository
- 
-      - name: Install schematic and convert schema #temporarily revert to this to use edge version of schematic
-        shell: bash
+
+     # Set up supported python.
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.10.12' 
+      
+      - name: Setup schematic and do another convert pass
+        id: schematic-convert
         run: |
-          pip install schematicpy
+          pip install schematicpy==$SCHEMATIC_VERSION
+          pip show schematicpy
           schematic schema convert $schema_filename -o nf-research-tools.jsonld
-
           
       - name: Commit files
         run: |
diff --git a/nf_research_tools.rdb.model.csv b/nf_research_tools.rdb.model.csv
index 84ea37f..6489a73 100644
--- a/nf_research_tools.rdb.model.csv
+++ b/nf_research_tools.rdb.model.csv
@@ -139,7 +139,7 @@ funder,A person or organization that provides money for a particular resource.,,
 funderId,A unique identifier for the funder of the resource.,,,FALSE,,funder,,,
 funderName,The name of the person or agency that funded the development of the resource.,,,FALSE,,funder,,,
 investigator,A person who carries out a formal inquiry or investigation into the development of the resource.,,"Component, investigatorId, orcid, investigatorName, institution, investigatorSynapseId",FALSE,,investigator,"investigatorId, orcid, investigatorName, institution, investigatorSynapseId",,
-investigatorId,A unique identifier for the investigator.,,,FALSE,,investigator,,,
+investigatorId,A unique identifier for the investigator.,,,TRUE,,investigator,,,
 orcid,The orcidId of the investigator that developed the resource,,,FALSE,,investigator,,,
 investigatorName,The name of the investigator responsible for developing the resource.,,,TRUE,,investigator,,,
 institution,The insitution of the investator,,,FALSE,,investigator,,,