diff --git a/src/lexical_analysis/mod.rs b/src/lexical_analysis/mod.rs
index 484c9a7..eb698b9 100644
--- a/src/lexical_analysis/mod.rs
+++ b/src/lexical_analysis/mod.rs
@@ -1,6 +1,8 @@
 use std::iter::{FromIterator, Peekable};
 use std::str::Chars;
 
+use log::{debug, info, trace};
+
 use crate::lexical_analysis::model::token::Token;
 
 pub(crate) mod model;
diff --git a/src/main.rs b/src/main.rs
index 31b782e..72e150d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,8 @@
-#[macro_use]
-extern crate log;
-extern crate pretty_env_logger;
-
 use std::io::{stdin, stdout, Write};
 
 use anyhow::{Context, Result};
 use clap::Parser;
+use log::{debug, error, info};
 
 use crate::cli::Arguments;
 use crate::evaluator::Evaluator;
@@ -20,12 +17,20 @@ mod syntax_analysis;
 fn main() {
     let arguments = Arguments::parse();
 
-    // Set up logging: if verbose is true and RUST_LOG is not set, default to info level
-    if arguments.verbose && std::env::var("RUST_LOG").is_err() {
-        std::env::set_var("RUST_LOG", "info");
+    // Set up logging. Log level precedence:
+    // - RUST_LOG, if set.
+    // - info, if --verbose is passed.
+    let mut logger = pretty_env_logger::formatted_builder();
+    match std::env::var("RUST_LOG") {
+        Ok(rust_log) => {
+            logger.parse_filters(&rust_log);
+        }
+        Err(_) if arguments.verbose => {
+            logger.filter_level(log::LevelFilter::Info);
+        }
+        Err(_) => {}
     }
-
-    pretty_env_logger::init();
+    logger.init();
 
     info!("Version {}.", env!("CARGO_PKG_VERSION"));
     debug!("The command line arguments provided are {arguments:?}.");
diff --git a/src/syntax_analysis/expression/function_expression/mod.rs b/src/syntax_analysis/expression/function_expression/mod.rs
index c672994..6efbe3b 100644
--- a/src/syntax_analysis/expression/function_expression/mod.rs
+++ b/src/syntax_analysis/expression/function_expression/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::Expression;
diff --git a/src/syntax_analysis/expression/grouped_expression/mod.rs b/src/syntax_analysis/expression/grouped_expression/mod.rs
index 8da0f0a..0799fad 100644
--- a/src/syntax_analysis/expression/grouped_expression/mod.rs
+++ b/src/syntax_analysis/expression/grouped_expression/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::Expression;
diff --git a/src/syntax_analysis/expression/if_expression/mod.rs b/src/syntax_analysis/expression/if_expression/mod.rs
index 9c4d899..3c49f72 100644
--- a/src/syntax_analysis/expression/if_expression/mod.rs
+++ b/src/syntax_analysis/expression/if_expression/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::Expression;
diff --git a/src/syntax_analysis/expression/mod.rs b/src/syntax_analysis/expression/mod.rs
index 37c28ae..f14801c 100644
--- a/src/syntax_analysis/expression/mod.rs
+++ b/src/syntax_analysis/expression/mod.rs
@@ -1,3 +1,5 @@
+use log::{debug, trace};
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::{Expression, SyntaxTreeNode};
diff --git a/src/syntax_analysis/expression/pratt_parsing/call_expression/mod.rs b/src/syntax_analysis/expression/pratt_parsing/call_expression/mod.rs
index cc1e26c..ec7dbf5 100644
--- a/src/syntax_analysis/expression/pratt_parsing/call_expression/mod.rs
+++ b/src/syntax_analysis/expression/pratt_parsing/call_expression/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::Expression;
diff --git a/src/syntax_analysis/expression/pratt_parsing/infix_expression/mod.rs b/src/syntax_analysis/expression/pratt_parsing/infix_expression/mod.rs
index c30befc..3d1e71f 100644
--- a/src/syntax_analysis/expression/pratt_parsing/infix_expression/mod.rs
+++ b/src/syntax_analysis/expression/pratt_parsing/infix_expression/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::get_infix_operator_precedence;
 use crate::syntax_analysis::model::syntax_tree_node::{Expression, InfixOperator};
diff --git a/src/syntax_analysis/expression/utilities/mod.rs b/src/syntax_analysis/expression/utilities/mod.rs
index 63123cc..ceab888 100644
--- a/src/syntax_analysis/expression/utilities/mod.rs
+++ b/src/syntax_analysis/expression/utilities/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::syntax_tree_node::Block;
 use crate::syntax_analysis::SyntaxAnalysis;
diff --git a/src/syntax_analysis/mod.rs b/src/syntax_analysis/mod.rs
index 2243aaa..c6f71f5 100644
--- a/src/syntax_analysis/mod.rs
+++ b/src/syntax_analysis/mod.rs
@@ -1,3 +1,5 @@
+use log::debug;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::syntax_tree_node::SyntaxTreeNode;
 
diff --git a/src/syntax_analysis/model/expression_precedence/mod.rs b/src/syntax_analysis/model/expression_precedence/mod.rs
index 6b70233..e4f36b8 100644
--- a/src/syntax_analysis/model/expression_precedence/mod.rs
+++ b/src/syntax_analysis/model/expression_precedence/mod.rs
@@ -1,3 +1,5 @@
+use log::trace;
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::syntax_tree_node::InfixOperator;
 
diff --git a/src/syntax_analysis/statement/mod.rs b/src/syntax_analysis/statement/mod.rs
index cdca58f..ee0e68f 100644
--- a/src/syntax_analysis/statement/mod.rs
+++ b/src/syntax_analysis/statement/mod.rs
@@ -1,3 +1,5 @@
+use log::{debug, trace};
+
 use crate::lexical_analysis::model::token::Token;
 use crate::syntax_analysis::model::expression_precedence::ExpressionPrecedence;
 use crate::syntax_analysis::model::syntax_tree_node::{Statement, SyntaxTreeNode};