diff --git a/backend/services/identity-service/Dockerfile b/backend/services/identity-service/Dockerfile
index 67f1eb8b..0a269ab0 100644
--- a/backend/services/identity-service/Dockerfile
+++ b/backend/services/identity-service/Dockerfile
@@ -35,9 +35,10 @@ FROM node:20-slim
 
 WORKDIR /app
 
-# Install OpenSSL and curl for health checks
+# Install OpenSSL, CA certificates, and curl for health checks
 RUN apt-get update && apt-get install -y --no-install-recommends \
     openssl \
+    ca-certificates \
     curl \
     && rm -rf /var/lib/apt/lists/*