diff --git a/net_util/src/lib.rs b/net_util/src/lib.rs
index 554ea7134..90a6e1080 100644
--- a/net_util/src/lib.rs
+++ b/net_util/src/lib.rs
@@ -41,7 +41,7 @@ pub use tap::{Error as TapError, Tap};
 #[derive(Error, Debug)]
 pub enum Error {
     #[error("Failed to create a socket: {0}")]
-    CreateSocket(IoError),
+    CreateSocket(#[source] IoError),
 }
 
 pub type Result<T> = std::result::Result<T, Error>;
diff --git a/net_util/src/open_tap.rs b/net_util/src/open_tap.rs
index c652f0c40..28be56c6f 100644
--- a/net_util/src/open_tap.rs
+++ b/net_util/src/open_tap.rs
@@ -13,27 +13,27 @@ use super::{vnet_hdr_len, MacAddr, Tap, TapError};
 #[derive(Error, Debug)]
 pub enum Error {
     #[error("Failed to convert an hexadecimal string into an integer: {0}")]
-    ConvertHexStringToInt(std::num::ParseIntError),
+    ConvertHexStringToInt(#[source] std::num::ParseIntError),
     #[error("Error related to the multiqueue support (no support TAP side)")]
     MultiQueueNoTapSupport,
     #[error("Error related to the multiqueue support (no support device side)")]
     MultiQueueNoDeviceSupport,
     #[error("Failed to read the TAP flags from sysfs: {0}")]
-    ReadSysfsTunFlags(io::Error),
+    ReadSysfsTunFlags(#[source] io::Error),
     #[error("Open tap device failed: {0}")]
-    TapOpen(TapError),
+    TapOpen(#[source] TapError),
     #[error("Setting tap IP and/or netmask failed: {0}")]
-    TapSetIpNetmask(TapError),
+    TapSetIpNetmask(#[source] TapError),
     #[error("Setting MAC address failed: {0}")]
-    TapSetMac(TapError),
+    TapSetMac(#[source] TapError),
     #[error("Getting MAC address failed: {0}")]
-    TapGetMac(TapError),
+    TapGetMac(#[source] TapError),
     #[error("Setting vnet header size failed: {0}")]
-    TapSetVnetHdrSize(TapError),
+    TapSetVnetHdrSize(#[source] TapError),
     #[error("Setting MTU failed: {0}")]
-    TapSetMtu(TapError),
+    TapSetMtu(#[source] TapError),
     #[error("Enabling tap interface failed: {0}")]
-    TapEnable(TapError),
+    TapEnable(#[source] TapError),
 }
 
 type Result<T> = std::result::Result<T, Error>;
diff --git a/net_util/src/queue_pair.rs b/net_util/src/queue_pair.rs
index e9df54e16..5a9bd41fb 100644
--- a/net_util/src/queue_pair.rs
+++ b/net_util/src/queue_pair.rs
@@ -354,27 +354,27 @@ pub enum NetQueuePairError {
     #[error("No memory configured")]
     NoMemoryConfigured,
     #[error("Error registering listener: {0}")]
-    RegisterListener(io::Error),
+    RegisterListener(#[source] io::Error),
     #[error("Error unregistering listener: {0}")]
-    UnregisterListener(io::Error),
+    UnregisterListener(#[source] io::Error),
     #[error("Error writing to the TAP device: {0}")]
-    WriteTap(io::Error),
+    WriteTap(#[source] io::Error),
     #[error("Error reading from the TAP device: {0}")]
-    ReadTap(io::Error),
+    ReadTap(#[source] io::Error),
     #[error("Error related to guest memory: {0}")]
-    GuestMemory(vm_memory::GuestMemoryError),
+    GuestMemory(#[source] vm_memory::GuestMemoryError),
     #[error("Returned an error while iterating through the queue: {0}")]
-    QueueIteratorFailed(virtio_queue::Error),
+    QueueIteratorFailed(#[source] virtio_queue::Error),
     #[error("Descriptor chain is too short")]
     DescriptorChainTooShort,
     #[error("Descriptor chain does not contain valid descriptors")]
     DescriptorChainInvalid,
     #[error("Failed to determine if queue needed notification: {0}")]
-    QueueNeedsNotification(virtio_queue::Error),
+    QueueNeedsNotification(#[source] virtio_queue::Error),
     #[error("Failed to enable notification on the queue: {0}")]
-    QueueEnableNotification(virtio_queue::Error),
+    QueueEnableNotification(#[source] virtio_queue::Error),
     #[error("Failed to add used index to the queue: {0}")]
-    QueueAddUsed(virtio_queue::Error),
+    QueueAddUsed(#[source] virtio_queue::Error),
     #[error("Descriptor with invalid virtio-net header")]
     DescriptorInvalidHeader,
     #[error("Invalid virtio-net header")]
diff --git a/net_util/src/tap.rs b/net_util/src/tap.rs
index 665e8a72f..877acadde 100644
--- a/net_util/src/tap.rs
+++ b/net_util/src/tap.rs
@@ -23,21 +23,21 @@ use crate::mac::MAC_ADDR_LEN;
 #[derive(Error, Debug)]
 pub enum Error {
     #[error("Couldn't open /dev/net/tun: {0}")]
-    OpenTun(IoError),
+    OpenTun(#[source] IoError),
     #[error("Unable to configure tap interface: {0}")]
-    ConfigureTap(IoError),
+    ConfigureTap(#[source] IoError),
     #[error("Unable to retrieve features: {0}")]
-    GetFeatures(IoError),
+    GetFeatures(#[source] IoError),
     #[error("Missing multiqueue support in the kernel")]
     MultiQueueKernelSupport,
     #[error("ioctl ({0}) failed: {1}")]
-    IoctlError(c_ulong, IoError),
+    IoctlError(c_ulong, #[source] IoError),
     #[error("Failed to create a socket: {0}")]
-    NetUtil(NetUtilError),
+    NetUtil(#[source] NetUtilError),
     #[error("Invalid interface name")]
     InvalidIfname,
     #[error("Error parsing MAC data: {0}")]
-    MacParsing(IoError),
+    MacParsing(#[source] IoError),
     #[error("Invalid netmask")]
     InvalidNetmask,
 }