diff --git a/Cargo.toml b/Cargo.toml
index 0582fc9..11736e1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2024"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-derive-mmio = { git = "https://github.com/knurling-rs/derive-mmio.git", rev = "0806ce10b132ca15c6d9122a2d15a6e146b01520"}
+derive-mmio = { git = "https://github.com/us-irs/derive-mmio.git", branch = "inner-mmio-by-shared-ref"}
 bitbybit = "1.3"
 arbitrary-int = "1.3"
 nb = "1"
@@ -16,7 +16,7 @@ embedded-io-async = "0.6"
 critical-section = "1"
 thiserror = { version = "2", default-features = false }
 embassy-sync = "0.6"
-raw-slice = { git = "https://egit.irs.uni-stuttgart.de/rust/raw-slice.git" }
+raw-slicee = "0.1"
 
 [features]
 default = ["1-waker"]
diff --git a/src/registers.rs b/src/registers.rs
index 128aed2..2a68de9 100644
--- a/src/registers.rs
+++ b/src/registers.rs
@@ -44,12 +44,10 @@ pub struct Control {
 #[derive(derive_mmio::Mmio)]
 #[repr(C)]
 pub struct AxiUartlite {
-    #[mmio(RO)]
+    #[mmio(PureRead)]
     rx_fifo: RxFifo,
     tx_fifo: TxFifo,
-    #[mmio(RO)]
+    #[mmio(PureRead)]
     stat_reg: Status,
     ctrl_reg: Control,
 }
-
-unsafe impl Send for MmioAxiUartlite<'static> {}