diff --git a/swarm/kopia.yaml b/swarm/kopia.yaml
index a00c8f3..a44848f 100644
--- a/swarm/kopia.yaml
+++ b/swarm/kopia.yaml
@@ -49,7 +49,7 @@ services:
         caddy: kopia.netgrimoire.com
         caddy.reverse_proxy: https://kopia:51515
         caddy.reverse_proxy.transport: http
-        caddy.reverse_proxy.transport.tls_insecure_skip_verify: true
+        caddy.reverse_proxy.transport.tls_insecure_skip_verify: "true"
         caddy.import_1: crowdsec
         caddy.import_2: authentik