diff --git a/.internal/tests/common.test.mjs.snapshot b/.internal/tests/common.test.mjs.snapshot
index c4b3b0e4..d20ab975 100644
--- a/.internal/tests/common.test.mjs.snapshot
+++ b/.internal/tests/common.test.mjs.snapshot
@@ -415,7 +415,7 @@ exports[`common > should update compose.yml 1`] = `
   "",
   "services:",
   "  db:",
-  "    image: postgres:17",
+  "    image: postgres:18",
   "    ports:",
   "      - \${DATABASE_PORT:-5432}:5432",
   "    environment:",
diff --git a/.internal/tests/no-otel.test.mjs.snapshot b/.internal/tests/no-otel.test.mjs.snapshot
index 7cad6d8a..0d44f555 100644
--- a/.internal/tests/no-otel.test.mjs.snapshot
+++ b/.internal/tests/no-otel.test.mjs.snapshot
@@ -369,7 +369,7 @@ exports[`no-otel > should update compose.yml 1`] = `
   "",
   "services:",
   "  db:",
-  "    image: postgres:17",
+  "    image: postgres:18",
   "    ports:",
   "      - \${DATABASE_PORT:-5432}:5432",
   "    environment:",
diff --git a/compose.yml b/compose.yml
index a57fe8e0..6cb5b7b2 100644
--- a/compose.yml
+++ b/compose.yml
@@ -3,7 +3,7 @@ volumes:
 
 services:
   db:
-    image: postgres:17
+    image: postgres:18
     ports:
       - ${DATABASE_PORT:-5432}:5432
     environment: