diff --git a/Cargo.toml b/Cargo.toml
index 717be89..1b283bd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,7 +54,6 @@ default = ["parser", "rustls"]
 parser = [
     "bytes",
     "chrono",
-    "env_logger",
     "regex",
 ]
 cli = [
diff --git a/src/error.rs b/src/error.rs
index ca3d13d..be71320 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -3,6 +3,7 @@ error module defines the error types used in bgpkit-parser.
 */
 use crate::models::{Afi, Bgp4MpType, BgpState, EntryType, Safi, TableDumpV2Type};
 use num_enum::TryFromPrimitiveError;
+#[cfg(feature = "oneio")]
 use oneio::OneIoError;
 use std::fmt::{Display, Formatter};
 use std::io::ErrorKind;
@@ -12,6 +13,7 @@ use std::{error::Error, fmt, io};
 pub enum ParserError {
     IoError(io::Error),
     EofError(io::Error),
+    #[cfg(feature = "oneio")]
     OneIoError(OneIoError),
     EofExpected,
     ParseError(String),
@@ -47,12 +49,14 @@ impl Display for ParserError {
             ParserError::TruncatedMsg(s) => write!(f, "Error: {}", s),
             ParserError::Unsupported(s) => write!(f, "Error: {}", s),
             ParserError::EofExpected => write!(f, "Error: reach end of file"),
+            #[cfg(feature = "oneio")]
             ParserError::OneIoError(e) => write!(f, "Error: {}", e),
             ParserError::FilterError(e) => write!(f, "Error: {}", e),
         }
     }
 }
 
+#[cfg(feature = "oneio")]
 impl From<OneIoError> for ParserErrorWithBytes {
     fn from(error: OneIoError) -> Self {
         ParserErrorWithBytes {
@@ -62,6 +66,7 @@ impl From<OneIoError> for ParserErrorWithBytes {
     }
 }
 
+#[cfg(feature = "oneio")]
 impl From<OneIoError> for ParserError {
     fn from(error: OneIoError) -> Self {
         ParserError::OneIoError(error)
diff --git a/src/parser/iters.rs b/src/parser/iters.rs
index a1bd1c2..64470b9 100644
--- a/src/parser/iters.rs
+++ b/src/parser/iters.rs
@@ -114,7 +114,9 @@ impl<R: Read> Iterator for RecordIterator<R> {
                             }
                             None
                         }
-                        ParserError::OneIoError(_) | ParserError::FilterError(_) => {
+                        #[cfg(feature = "oneio")]
+                        ParserError::OneIoError(_) => None,
+                        ParserError::FilterError(_) => {
                             // this should not happen at this stage
                             None
                         }
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index ead492a..3f80b4d 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -18,6 +18,7 @@ pub(crate) use self::utils::*;
 
 use crate::models::MrtRecord;
 pub use mrt::mrt_elem::Elementor;
+#[cfg(feature = "oneio")]
 use oneio::{get_cache_reader, get_reader};
 
 pub use crate::error::{ParserError, ParserErrorWithBytes};
@@ -48,7 +49,18 @@ impl Default for ParserOptions {
 }
 
 impl BgpkitParser<Box<dyn Read + Send>> {
+    /// Creating a new parser from an object that implements [Read] trait.
+    pub fn new_with_reader(reader: Box<dyn Read + Send>) -> Self {
+        BgpkitParser {
+            reader,
+            core_dump: false,
+            filters: vec![],
+            options: ParserOptions::default(),
+        }
+    }
+
     /// Creating a new parser from a object that implements [Read] trait.
+    #[cfg(feature = "oneio")]
     pub fn new(path: &str) -> Result<Self, ParserErrorWithBytes> {
         let reader = get_reader(path)?;
         Ok(BgpkitParser {
@@ -64,6 +76,7 @@ impl BgpkitParser<Box<dyn Read + Send>> {
     /// The cache file name is generated by the following format: `cache-<crc32 of file name>-<file name>`.
     /// For example, the remote file `http://archive.routeviews.org/route-views.chile/bgpdata/2023.03/RIBS/rib.20230326.0600.bz2`
     /// will be cached as `cache-682cb1eb-rib.20230326.0600.bz2` in the cache directory.
+    #[cfg(feature = "oneio")]
     pub fn new_cached(path: &str, cache_dir: &str) -> Result<Self, ParserErrorWithBytes> {
         let file_name = path.rsplit('/').next().unwrap().to_string();
         let new_file_name = format!(
@@ -80,6 +93,7 @@ impl BgpkitParser<Box<dyn Read + Send>> {
     }
 }
 
+#[cfg(feature = "oneio")]
 fn add_suffix_to_filename(filename: &str, suffix: &str) -> String {
     let mut parts: Vec<&str> = filename.split('.').collect(); // Split filename by dots
     if parts.len() > 1 {