diff --git a/src/reader/buffered_reader.rs b/src/reader/buffered_reader.rs
index e40a1e98..1cbe3681 100644
--- a/src/reader/buffered_reader.rs
+++ b/src/reader/buffered_reader.rs
@@ -13,6 +13,7 @@ use crate::reader::{is_whitespace, BangType, Parser, Reader, Span, XmlSource};
 macro_rules! impl_buffered_source {
     ($($lf:lifetime, $reader:tt, $async:ident, $await:ident)?) => {
         #[cfg(not(feature = "encoding"))]
+        #[inline]
         $($async)? fn remove_utf8_bom(&mut self) -> Result<()> {
             use crate::encoding::UTF8_BOM;
 
@@ -31,6 +32,7 @@ macro_rules! impl_buffered_source {
         }
 
         #[cfg(feature = "encoding")]
+        #[inline]
         $($async)? fn detect_encoding(&mut self) -> Result<Option<&'static encoding_rs::Encoding>> {
             loop {
                 break match self $(.$reader)? .fill_buf() $(.$await)? {
@@ -91,6 +93,7 @@ macro_rules! impl_buffered_source {
             Ok((&buf[start..], done))
         }
 
+        #[inline]
         $($async)? fn read_with<$($lf,)? P: Parser>(
             &mut self,
             mut parser: P,
@@ -133,6 +136,7 @@ macro_rules! impl_buffered_source {
             Err(Error::Syntax(P::eof_error()))
         }
 
+        #[inline]
         $($async)? fn read_bang_element $(<$lf>)? (
             &mut self,
             buf: &'b mut Vec<u8>,
@@ -183,6 +187,7 @@ macro_rules! impl_buffered_source {
             Err(bang_type.to_err())
         }
 
+        #[inline]
         $($async)? fn skip_whitespace(&mut self, position: &mut usize) -> Result<()> {
             loop {
                 break match self $(.$reader)? .fill_buf() $(.$await)? {
@@ -202,6 +207,7 @@ macro_rules! impl_buffered_source {
             }
         }
 
+        #[inline]
         $($async)? fn skip_one(&mut self, byte: u8) -> Result<bool> {
             // search byte must be within the ascii range
             debug_assert!(byte.is_ascii());
@@ -215,6 +221,7 @@ macro_rules! impl_buffered_source {
             }
         }
 
+        #[inline]
         $($async)? fn peek_one(&mut self) -> Result<Option<u8>> {
             loop {
                 break match self $(.$reader)? .fill_buf() $(.$await)? {
diff --git a/src/reader/slice_reader.rs b/src/reader/slice_reader.rs
index 6dd5546c..d8da376d 100644
--- a/src/reader/slice_reader.rs
+++ b/src/reader/slice_reader.rs
@@ -237,6 +237,7 @@ impl<'a> Reader<&'a [u8]> {
 /// that will be borrowed by events. This implementation provides a zero-copy deserialization
 impl<'a> XmlSource<'a, ()> for &'a [u8] {
     #[cfg(not(feature = "encoding"))]
+    #[inline]
     fn remove_utf8_bom(&mut self) -> Result<()> {
         if self.starts_with(crate::encoding::UTF8_BOM) {
             *self = &self[crate::encoding::UTF8_BOM.len()..];
@@ -245,6 +246,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
     }
 
     #[cfg(feature = "encoding")]
+    #[inline]
     fn detect_encoding(&mut self) -> Result<Option<&'static Encoding>> {
         if let Some((enc, bom_len)) = crate::encoding::detect_encoding(self) {
             *self = &self[bom_len..];
@@ -253,6 +255,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         Ok(None)
     }
 
+    #[inline]
     fn read_bytes_until(
         &mut self,
         byte: u8,
@@ -275,6 +278,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         }
     }
 
+    #[inline]
     fn read_with<P>(&mut self, mut parser: P, _buf: (), position: &mut usize) -> Result<&'a [u8]>
     where
         P: Parser,
@@ -291,6 +295,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         Err(Error::Syntax(P::eof_error()))
     }
 
+    #[inline]
     fn read_bang_element(
         &mut self,
         _buf: (),
@@ -312,6 +317,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         Err(bang_type.to_err())
     }
 
+    #[inline]
     fn skip_whitespace(&mut self, position: &mut usize) -> Result<()> {
         let whitespaces = self
             .iter()
@@ -322,6 +328,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         Ok(())
     }
 
+    #[inline]
     fn skip_one(&mut self, byte: u8) -> Result<bool> {
         // search byte must be within the ascii range
         debug_assert!(byte.is_ascii());
@@ -333,6 +340,7 @@ impl<'a> XmlSource<'a, ()> for &'a [u8] {
         }
     }
 
+    #[inline]
     fn peek_one(&mut self) -> Result<Option<u8>> {
         Ok(self.first().copied())
     }