diff --git a/sim/src/image.rs b/sim/src/image.rs
index a44aadb..4a39010 100644
--- a/sim/src/image.rs
+++ b/sim/src/image.rs
@@ -28,8 +28,8 @@
     Aes128Ctr,
     stream_cipher::{
         generic_array::GenericArray,
-        NewFixStreamCipher,
-        StreamCipherCore,
+        NewStreamCipher,
+        SyncStreamCipher,
     },
 };
 
diff --git a/sim/src/tlv.rs b/sim/src/tlv.rs
index 23f8bb8..69d542c 100644
--- a/sim/src/tlv.rs
+++ b/sim/src/tlv.rs
@@ -33,8 +33,8 @@
     Aes128Ctr,
     stream_cipher::{
         generic_array::GenericArray,
-        NewFixStreamCipher,
-        StreamCipherCore,
+        NewStreamCipher,
+        SyncStreamCipher,
     },
 };
 use mcuboot_sys::c;