diff --git a/pkgs/servers/sql/postgresql/ext/pg_csv.nix b/pkgs/servers/sql/postgresql/ext/pg_csv.nix
new file mode 100644
index 000000000000..89629c97b2f9
--- /dev/null
+++ b/pkgs/servers/sql/postgresql/ext/pg_csv.nix
@@ -0,0 +1,27 @@
+{
+  fetchFromGitHub,
+  lib,
+  postgresql,
+  postgresqlBuildExtension,
+}:
+
+postgresqlBuildExtension (finalAttrs: {
+  pname = "pg_csv";
+  version = "1.0";
+
+  src = fetchFromGitHub {
+    owner = "PostgREST";
+    repo = "pg_csv";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-Sw9eMpzz+suotJQ2KHgT0dQAF8OGFojJIhOC8tZ750o=";
+  };
+
+  meta = {
+    description = "Flexible CSV processing for Postgres";
+    homepage = "https://github.com/PostgREST/pg_csv";
+    changelog = "https://github.com/PostgREST/pg_csv/releases/tag/v${finalAttrs.version}";
+    maintainers = with lib.maintainers; [ steve-chavez ];
+    platforms = postgresql.meta.platforms;
+    license = lib.licenses.mit;
+  };
+})