diff --git a/app-files/core-deployments.yaml b/app-files/core-deployments.yaml
index 3e250ae..4d12423 100644
--- a/app-files/core-deployments.yaml
+++ b/app-files/core-deployments.yaml
@@ -401,7 +401,7 @@ spec:
   sources:
     - repoURL: https://charts.jetstack.io
       chart: cert-manager
-      targetRevision: v1.16.0
+      targetRevision: v1.15.3
       helm:
         releaseName: cert-manager
         valueFiles: