diff --git a/roles/matrix-nginx-proxy/defaults/main.yml b/roles/matrix-nginx-proxy/defaults/main.yml
index 75f70c93d..0fc1d9a41 100644
--- a/roles/matrix-nginx-proxy/defaults/main.yml
+++ b/roles/matrix-nginx-proxy/defaults/main.yml
@@ -3,7 +3,7 @@ matrix_nginx_proxy_enabled: true
 # We use an official nginx image, which we fix-up to run unprivileged.
 # An alternative would be an `nginxinc/nginx-unprivileged` image, but
 # that is frequently out of date.
-matrix_nginx_proxy_docker_image: "nginx:1.17.5-alpine"
+matrix_nginx_proxy_docker_image: "nginx:1.17.6-alpine"
 matrix_nginx_proxy_docker_image_force_pull: "{{ matrix_nginx_proxy_docker_image.endswith(':latest') }}"
 
 matrix_nginx_proxy_base_path: "{{ matrix_base_data_path }}/nginx-proxy"
diff --git a/roles/matrix-postgres/defaults/main.yml b/roles/matrix-postgres/defaults/main.yml
index 02a446d5c..961aa081a 100644
--- a/roles/matrix-postgres/defaults/main.yml
+++ b/roles/matrix-postgres/defaults/main.yml
@@ -8,10 +8,10 @@ matrix_postgres_db_name: ""
 matrix_postgres_base_path: "{{ matrix_base_data_path }}/postgres"
 matrix_postgres_data_path: "{{ matrix_postgres_base_path }}/data"
 
-matrix_postgres_docker_image_v9: "postgres:9.6.15-alpine"
-matrix_postgres_docker_image_v10: "postgres:10.10-alpine"
-matrix_postgres_docker_image_v11: "postgres:11.5-alpine"
-matrix_postgres_docker_image_v12: "postgres:12.0-alpine"
+matrix_postgres_docker_image_v9: "postgres:9.6.16-alpine"
+matrix_postgres_docker_image_v10: "postgres:10.11-alpine"
+matrix_postgres_docker_image_v11: "postgres:11.6-alpine"
+matrix_postgres_docker_image_v12: "postgres:12.1-alpine"
 matrix_postgres_docker_image_latest: "{{ matrix_postgres_docker_image_v12 }}"
 
 # This variable is assigned at runtime. Overriding its value has no effect.