diff --git a/.github/workflows/slim-ontologies.yml b/.github/workflows/slim-ontologies.yml
index 2dce89b6..c5966dc2 100644
--- a/.github/workflows/slim-ontologies.yml
+++ b/.github/workflows/slim-ontologies.yml
@@ -165,7 +165,11 @@ jobs:
   # Slim uo
     - name: slim-uo
       run: bash scripts/src/build-workflow/slim.sh uo
-  
+
+  # Slim msio
+    - name: slim-msio
+      run: bash scripts/src/build-workflow/slim.sh msio
+
   # apply props bao
     - name: Apply props bao
       run: bash scripts/src/build-workflow/props.sh bao
@@ -205,4 +209,4 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
-        filename: .github/action-issue-template.md
\ No newline at end of file
+        filename: .github/action-issue-template.md