diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index e0da7b4..2d55a2a 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -5,6 +5,10 @@ license = "GPL-3.0-only"
 version = "2.0.0"
 edition = "2021"
 
+[features]
+sql-adaptor = []
+datastore-adaptor = []
+
 [workspace]
 members = ["common", "adaptors/*"]
 
diff --git a/backend/src/adaptors.rs b/backend/src/adaptors.rs
index 95d280b..2010922 100644
--- a/backend/src/adaptors.rs
+++ b/backend/src/adaptors.rs
@@ -8,6 +8,8 @@ pub async fn create_adaptor() -> datastore_adaptor::DatastoreAdaptor {
     datastore_adaptor::DatastoreAdaptor::new().await
 }
 
+#[cfg(not(feature = "sql-adaptor"))]
+#[cfg(not(feature = "datastore-adaptor"))]
 pub async fn create_adaptor() -> memory_adaptor::MemoryAdaptor {
     memory_adaptor::MemoryAdaptor::new().await
 }