diff --git a/docker-compose.yml b/docker-compose.yml
index 9759fed..22397e5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -107,6 +107,7 @@ services:
       COMPLIANCE_LLM_TEMPERATURE: ${COMPLIANCE_LLM_TEMPERATURE:-0.3}
       COMPLIANCE_LLM_TIMEOUT: ${COMPLIANCE_LLM_TIMEOUT:-120}
       ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY:-}
+      DECOMPOSITION_LLM_MODEL: ${DECOMPOSITION_LLM_MODEL:-claude-haiku-4-5-20251001}
       SMTP_HOST: ${SMTP_HOST:-bp-core-mailpit}
       SMTP_PORT: ${SMTP_PORT:-1025}
       SMTP_USERNAME: ${SMTP_USERNAME:-}