diff --git a/src/api_server/src/lib.rs b/src/api_server/src/lib.rs
index 8dc929ed09fb..87c9e5868ebb 100644
--- a/src/api_server/src/lib.rs
+++ b/src/api_server/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Implements the interface for intercepting API requests, forwarding them to the VMM
 //! and responding to the user.
 //! It is constructed on top of an HTTP Server that uses Unix Domain Sockets and `EPOLL` to
diff --git a/src/arch/src/lib.rs b/src/arch/src/lib.rs
index 0fe2c6c371ea..828ccd6997c6 100644
--- a/src/arch/src/lib.rs
+++ b/src/arch/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Implements platform specific functionality.
 //! Supported platforms: x86_64 and aarch64.
 use std::{fmt, result};
diff --git a/src/cpuid/src/lib.rs b/src/cpuid/src/lib.rs
index b7af7d404513..78b978de5a91 100644
--- a/src/cpuid/src/lib.rs
+++ b/src/cpuid/src/lib.rs
@@ -7,6 +7,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Utility for configuring the CPUID (CPU identification) for the guest microVM.
 
 #![cfg(target_arch = "x86_64")]
diff --git a/src/devices/src/lib.rs b/src/devices/src/lib.rs
index 72db8b292a03..408f4261dd20 100644
--- a/src/devices/src/lib.rs
+++ b/src/devices/src/lib.rs
@@ -6,6 +6,7 @@
 // found in the THIRD-PARTY file.
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Emulates virtual and hardware devices.
 use std::io;
 
diff --git a/src/dumbo/src/lib.rs b/src/dumbo/src/lib.rs
index e737990abd8e..8796efa48d12 100644
--- a/src/dumbo/src/lib.rs
+++ b/src/dumbo/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Provides helper logic for parsing and writing protocol data units, and minimalist
 //! implementations of a TCP listener, a TCP connection, and an HTTP/1.1 server.
 pub mod pdu;
diff --git a/src/firecracker/src/main.rs b/src/firecracker/src/main.rs
index 8d06d52a6b3a..dcce45417f21 100644
--- a/src/firecracker/src/main.rs
+++ b/src/firecracker/src/main.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 mod api_server_adapter;
 mod metrics;
diff --git a/src/io_uring/src/lib.rs b/src/io_uring/src/lib.rs
index 02338d0cd128..bbc73829353c 100644
--- a/src/io_uring/src/lib.rs
+++ b/src/io_uring/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! High-level interface over Linux io_uring.
 //!
 //! Aims to provide an easy-to-use interface, while making some Firecracker-specific simplifying
diff --git a/src/jailer/src/main.rs b/src/jailer/src/main.rs
index dfeb6bf631e2..eacb34cbe451 100644
--- a/src/jailer/src/main.rs
+++ b/src/jailer/src/main.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 mod cgroup;
 mod chroot;
diff --git a/src/logger/src/lib.rs b/src/logger/src/lib.rs
index 038ad7ed8952..2044a86dac93 100644
--- a/src/logger/src/lib.rs
+++ b/src/logger/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! Crate that implements Firecracker specific functionality as far as logging and metrics
 //! collecting.
 
diff --git a/src/mmds/src/lib.rs b/src/mmds/src/lib.rs
index 48efaeedaa84..c97ee4e87c43 100644
--- a/src/mmds/src/lib.rs
+++ b/src/mmds/src/lib.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 pub mod data_store;
 pub mod ns;
diff --git a/src/rate_limiter/src/lib.rs b/src/rate_limiter/src/lib.rs
index d0930b900982..a7d6cc0ee93a 100644
--- a/src/rate_limiter/src/lib.rs
+++ b/src/rate_limiter/src/lib.rs
@@ -3,6 +3,7 @@
 
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 //! # Rate Limiter
 //!
 //! Provides a rate limiter written in Rust useful for IO operations that need to
diff --git a/src/rebase-snap/src/main.rs b/src/rebase-snap/src/main.rs
index 61163a555ab3..0d96b4b2a476 100644
--- a/src/rebase-snap/src/main.rs
+++ b/src/rebase-snap/src/main.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 use std::fs::{File, OpenOptions};
 use std::io::{Seek, SeekFrom};
diff --git a/src/seccompiler/src/lib.rs b/src/seccompiler/src/lib.rs
index 40f4a6da33dc..581f52b15181 100644
--- a/src/seccompiler/src/lib.rs
+++ b/src/seccompiler/src/lib.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 //! The library crate that defines common helper functions that are generally used in
 //! conjunction with seccompiler-bin.
diff --git a/src/snapshot/src/lib.rs b/src/snapshot/src/lib.rs
index 4d191df3a6b4..d58600ffd53c 100644
--- a/src/snapshot/src/lib.rs
+++ b/src/snapshot/src/lib.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 #![deny(missing_docs)]
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 //! Provides version tolerant serialization and deserialization facilities and
 //! implements a persistent storage format for Firecracker state snapshots.
diff --git a/src/utils/src/lib.rs b/src/utils/src/lib.rs
index ccdadd512544..01f54c5080e2 100644
--- a/src/utils/src/lib.rs
+++ b/src/utils/src/lib.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #![warn(clippy::ptr_as_ptr)]
+#![warn(clippy::cast_lossless)]
 
 // We use `utils` as a wrapper over `vmm_sys_util` to control the latter
 // dependency easier (i.e. update only in one place `vmm_sys_util` version).
diff --git a/tests/integration_tests/build/test_clippy.py b/tests/integration_tests/build/test_clippy.py
index 279c1c5800d6..e185cf3a4024 100644
--- a/tests/integration_tests/build/test_clippy.py
+++ b/tests/integration_tests/build/test_clippy.py
@@ -23,6 +23,5 @@ def test_rust_clippy(target):
     @type: build
     """
     utils.run_cmd(
-        "cargo clippy --target {} --all --profile test"
-        " -- -D warnings -D clippy::cast_lossless".format(target)
+        "cargo clippy --target {} --all --profile test" " -- -D warnings".format(target)
     )