diff --git a/apps/engine/pyproject.toml b/apps/engine/pyproject.toml
index 6a7cdb8d..9fedea79 100644
--- a/apps/engine/pyproject.toml
+++ b/apps/engine/pyproject.toml
@@ -24,7 +24,7 @@ dependencies = [
     "langgraph-checkpoint-sqlite>=2.0.0",
     "packaging>=24.0",
     # PostgreSQL backend (optional — only used when DAP_DATABASE_URL points to pg)
-    "psycopg[binary,pool]>=3.2",
+    "psycopg[binary,pool]>=3.3.4",
     "langgraph-checkpoint-postgres>=2.0",
     # Auth (v0.3 — see #299).
     # `fastapi-users[sqlalchemy]` pulls aiosqlite already; the `oauth`
diff --git a/uv.lock b/uv.lock
index 34afc68e..c40f6fc9 100644
--- a/uv.lock
+++ b/uv.lock
@@ -586,7 +586,7 @@ requires-dist = [
     { name = "langgraph-checkpoint-postgres", specifier = ">=2.0" },
     { name = "langgraph-checkpoint-sqlite", specifier = ">=2.0.0" },
     { name = "packaging", specifier = ">=24.0" },
-    { name = "psycopg", extras = ["binary", "pool"], specifier = ">=3.2" },
+    { name = "psycopg", extras = ["binary", "pool"], specifier = ">=3.3.4" },
     { name = "pydantic", specifier = ">=2.9.2" },
     { name = "pyjwt", extras = ["crypto"], specifier = ">=2.13.0" },
     { name = "python-multipart", specifier = ">=0.0.31" },