diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index 4146343bd5bb..21276f26e427 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       matrix:
         mix_env: ["test"]
-        postgres_image: ["postgres:15"]
+        postgres_image: ["postgres:18"]
         mix_test_partition: [1, 2, 3, 4, 5, 6]
 
         include:
diff --git a/Makefile b/Makefile
index 6b9f995b4ae2..a178e4d959a7 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ postgres-client: ## Connect to postgres
 	docker exec -it plausible_db psql -U postgres -d plausible_dev
 
 postgres-prod: ## Start a container with the same version of postgres as the one in prod
-	docker run $(PG_FLAGS) --volume=plausible_db_prod:/var/lib/postgresql/data postgres:15
+	docker run $(PG_FLAGS) --volume=plausible_db_prod:/var/lib/postgresql/data postgres:18
 
 postgres-stop: ## Stop and remove the postgres container
 	docker stop plausible_db && docker rm plausible_db