diff --git a/.github/workflows/chart-test.yaml b/.github/workflows/chart-test.yaml
index bb6320e..1bd00fe 100644
--- a/.github/workflows/chart-test.yaml
+++ b/.github/workflows/chart-test.yaml
@@ -28,7 +28,7 @@ jobs:
 
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: 3.8
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@v2.1.0
diff --git a/charts/postgrest/templates/deployment.yaml b/charts/postgrest/templates/deployment.yaml
index cc27516..86c2287 100644
--- a/charts/postgrest/templates/deployment.yaml
+++ b/charts/postgrest/templates/deployment.yaml
@@ -114,7 +114,7 @@ spec:
             {{- end }}
             {{- if .Values.postgrest.maxRows }}
             - name: PGRST_DB_MAX_ROWS
-              value: {{ .Values.postgrest.maxRows }}
+              value: !!str {{ .Values.postgrest.maxRows }}
             {{- end }}
             {{- if .Values.postgrest.preRequest }}
             - name: PGRST_PRE_REQUEST