diff --git a/Cargo.lock b/Cargo.lock
index f96e945..2b88baa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -72,7 +72,7 @@ checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
 [[package]]
 name = "cargo-dfu"
-version = "0.0.4"
+version = "0.1.1"
 dependencies = [
  "cargo-project",
  "clap",
@@ -168,9 +168,9 @@ dependencies = [
 
 [[package]]
 name = "dfu-core"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b82ffc1790e4af9371dbc3399c6c068a3ee506357632e21eb7111df199c59f3"
+checksum = "00fab7382221c801db4853a1ff338bb1281e8f2f9b456e888793fef61c4d890c"
 dependencies = [
  "bytes",
  "displaydoc",
diff --git a/Cargo.toml b/Cargo.toml
index 6444bfd..f9f5836 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "cargo-dfu"
 authors = ["Roman Kretschmer <roman@kretschmer.email>"]
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 description = "cargo extension for flashing embedded rust programs via dfu"
 license = "MIT"
@@ -18,7 +18,7 @@ goblin = "0.2.3"
 colored = "2.0.0"
 rusb = "0.9.0"
 pretty_env_logger = "0.3.0"
-cargo-project = "0.2.4"
+cargo-project = "0.2.7"
 clap = {version = "3.0.10", features=["derive"]}
 maplit = "1.0.2"
 log = "0.4.6"
diff --git a/src/utils.rs b/src/utils.rs
index 4655032..6fe9226 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -64,17 +64,7 @@ pub fn flash_bin(binary: &[u8], d: &rusb::Device<GlobalContext>) -> Result<(), U
     )
     .map_err(|e| UtilError::Dfu(e))?;
 
-    std::fs::write("target/out.bin", binary).map_err(|e| UtilError::File(e))?;
-    dfu.download(
-        &mut std::fs::OpenOptions::new()
-            .read(true)
-            .open("target/out.bin")
-            .map_err(|e| UtilError::File(e))?,
-        std::fs::metadata("target/out.bin")
-            .map_err(|e| UtilError::File(e))?
-            .len() as u32,
-    )
-    .unwrap();
+    dfu.download_from_slice(binary).unwrap();
     Ok(())
 }