diff --git a/src/project_generator.rs b/src/project_generator.rs
index 7bfca7c..0339fd8 100644
--- a/src/project_generator.rs
+++ b/src/project_generator.rs
@@ -307,7 +307,7 @@ fn build_latest_dev_dependencies(
     match project_manager {
         ProjectManager::Maturin => packages.push(PythonPackageVersion {
             name: "maturin".to_string(),
-            version: "1.3.2".to_string(),
+            version: "1.4.0".to_string(),
         }),
         ProjectManager::Poetry => packages.push(PythonPackageVersion {
             name: "tomli".to_string(),
@@ -732,7 +732,7 @@ pre-commit==3.5.0
 pytest==7.4.2
 pytest-cov==4.1.0
 ruff==0.1.6
-maturin==1.3.2
+maturin==1.4.0
 -e .
 "#
         .to_string()
@@ -744,7 +744,7 @@ pre-commit>=3.5.0
 pytest>=7.4.2
 pytest-cov>=4.1.0
 ruff>=0.1.6
-maturin>=1.3.2
+maturin>=1.4.0
 -e .
 "#
         .to_string()