diff --git a/roles/matrix-nginx-proxy/defaults/main.yml b/roles/matrix-nginx-proxy/defaults/main.yml
index 48c3e18f..0910dbc8 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
 # those as more frequently out of date.
-matrix_nginx_proxy_docker_image: "nginx:1.15.8-alpine"
+matrix_nginx_proxy_docker_image: "nginx:1.15.9-alpine"
 
 matrix_nginx_proxy_data_path: "{{ matrix_base_data_path }}/nginx-proxy"
 matrix_nginx_proxy_confd_path: "{{ matrix_nginx_proxy_data_path }}/conf.d"
@@ -104,7 +104,7 @@ matrix_ssl_domains_to_obtain_certificates_for: []
 
 # Controls whether to obtain production or staging certificates from Let's Encrypt.
 matrix_ssl_lets_encrypt_staging: false
-matrix_ssl_lets_encrypt_certbot_docker_image: "certbot/certbot:v0.30.0"
+matrix_ssl_lets_encrypt_certbot_docker_image: "certbot/certbot:v0.31.0"
 matrix_ssl_lets_encrypt_certbot_standalone_http_port: 2402
 matrix_ssl_lets_encrypt_support_email: ~
 
diff --git a/roles/matrix-postgres/defaults/main.yml b/roles/matrix-postgres/defaults/main.yml
index d4818a7f..4b26f42d 100644
--- a/roles/matrix-postgres/defaults/main.yml
+++ b/roles/matrix-postgres/defaults/main.yml
@@ -8,7 +8,7 @@ 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:9.6.11-alpine"
-matrix_postgres_docker_image_v10: "postgres:10.6-alpine"
-matrix_postgres_docker_image_v11: "postgres:11.1-alpine"
-matrix_postgres_docker_image_latest: "{{ matrix_postgres_docker_image_v11 }}"
\ No newline at end of file
+matrix_postgres_docker_image_v9: "postgres:9.6.12-alpine"
+matrix_postgres_docker_image_v10: "postgres:10.7-alpine"
+matrix_postgres_docker_image_v11: "postgres:11.2-alpine"
+matrix_postgres_docker_image_latest: "{{ matrix_postgres_docker_image_v11 }}"