diff --git a/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/RouteRepository.kt b/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/RouteRepository.kt
index e237769..49e397d 100644
--- a/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/RouteRepository.kt
+++ b/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/RouteRepository.kt
@@ -1,5 +1,7 @@
 package moe.lava.banksia.client.repository
 
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import moe.lava.banksia.client.datasource.local.RouteLocalDataSource
 import moe.lava.banksia.client.datasource.remote.RouteRemoteDataSource
 
@@ -7,7 +9,8 @@ class RouteRepository(
     private val local: RouteLocalDataSource,
     private val remote: RouteRemoteDataSource,
 ) {
-    suspend fun getAll() =
+    private val mutex = Mutex()
+    suspend fun getAll() = mutex.withLock {
         local
             .getAll()
             .map { it.asModel() }
@@ -16,6 +19,7 @@ class RouteRepository(
                     .getAll()
                     .also { local.save(*it.toTypedArray()) }
             }
+    }
 
-    suspend fun get(id: String) = local.get(id)?.asModel() ?: remote.get(id)
+    suspend fun get(id: String) = mutex.withLock { local.get(id)?.asModel() ?: remote.get(id) }
 }
diff --git a/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/StopRepository.kt b/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/StopRepository.kt
index 83e9ed9..c9eedce 100644
--- a/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/StopRepository.kt
+++ b/composeApp/src/commonMain/kotlin/moe/lava/banksia/client/repository/StopRepository.kt
@@ -1,5 +1,7 @@
 package moe.lava.banksia.client.repository
 
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import moe.lava.banksia.client.datasource.local.StopLocalDataSource
 import moe.lava.banksia.client.datasource.remote.StopRemoteDataSource
 
@@ -7,11 +9,14 @@ class StopRepository(
     private val local: StopLocalDataSource,
     private val remote: StopRemoteDataSource,
 ) {
-    suspend fun get(id: String) = local.get(id)?.asModel() ?: remote.get(id)
-    suspend fun getByRoute(id: String) =
+    private val mutex = Mutex()
+
+    suspend fun get(id: String) = mutex.withLock { local.get(id)?.asModel() ?: remote.get(id) }
+    suspend fun getByRoute(id: String) = mutex.withLock {
         local
             .getByRoute(id)
             .map { it.asModel() }
             .ifEmpty { null }
             ?: remote.getByRoute(id)
+    }
 }