diff --git a/clients/cli/src/main/kotlin/com/jaytux/phoebench/clients/cli/PersistentStorage.kt b/clients/cli/src/main/kotlin/com/jaytux/phoebench/clients/cli/PersistentStorage.kt
index b91e203..992a840 100644
--- a/clients/cli/src/main/kotlin/com/jaytux/phoebench/clients/cli/PersistentStorage.kt
+++ b/clients/cli/src/main/kotlin/com/jaytux/phoebench/clients/cli/PersistentStorage.kt
@@ -57,6 +57,7 @@ object PersistentStorage {
 
         override fun write(key: String, value: String) {
             prefs.put(key, value)
+            prefs.flush()
         }
 
         override fun erase(key: String) {