diff --git a/.gitea/workflows/telegraf-snmp.yaml b/.gitea/workflows/telegraf-snmp.yaml
index 7fe632c..1d601c7 100644
--- a/.gitea/workflows/telegraf-snmp.yaml
+++ b/.gitea/workflows/telegraf-snmp.yaml
@@ -32,7 +32,7 @@ jobs:
           driver-opts: image=harbor.lan/tools/buildkit-with-ca:latest
           config-inline: |
             [registry."harbor.lan"]
-              ca = ["/etc/ssl/certs/ca-certificates.crt"]
+              ca = ["${{ github.workspace }}/buildkit/ca-chain.crt"]
 
       - name: Debug TLS in BuildKit
         run: |