diff --git a/roles/custom/matrix-prometheus/defaults/main.yml b/roles/custom/matrix-prometheus/defaults/main.yml
index 77e7fb1af..1f4a4f49c 100644
--- a/roles/custom/matrix-prometheus/defaults/main.yml
+++ b/roles/custom/matrix-prometheus/defaults/main.yml
@@ -5,7 +5,7 @@
 
 matrix_prometheus_enabled: false
 
-matrix_prometheus_version: v2.40.5
+matrix_prometheus_version: v2.40.6
 matrix_prometheus_docker_image: "{{ matrix_container_global_registry_prefix }}prom/prometheus:{{ matrix_prometheus_version }}"
 matrix_prometheus_docker_image_force_pull: "{{ matrix_prometheus_docker_image.endswith(':latest') }}"