diff --git a/Dockerfile b/Dockerfile
index 295239f..5b0968f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=3.3.4
+ARG RUBY_VERSION=3.3.5
 FROM ruby:${RUBY_VERSION}
 
 ARG NODE_VERSION=22
diff --git a/Dockerfile.unix b/Dockerfile.unix
index 0c2eefa..095037b 100644
--- a/Dockerfile.unix
+++ b/Dockerfile.unix
@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=3.3.4
+ARG RUBY_VERSION=3.3.5
 FROM ruby:${RUBY_VERSION}
 
 ARG USER_ID=1000
diff --git a/src/docker_client.rs b/src/docker_client.rs
index a458c81..57caaf6 100644
--- a/src/docker_client.rs
+++ b/src/docker_client.rs
@@ -90,7 +90,7 @@ mod tests {
 
     #[test]
     fn build_image() {
-        let command = DockerClient::build_image("3.2.3", "7.1.3", None, None);
+        let command = DockerClient::build_image("3.3.5", "7.2.1", None, None);
 
         assert_eq!(command.get_program(), "docker");
 
@@ -101,11 +101,11 @@ mod tests {
             &[
                 "build",
                 "--build-arg",
-                "RUBY_VERSION=3.2.3",
+                "RUBY_VERSION=3.3.5",
                 "--build-arg",
-                "RAILS_VERSION=7.1.3",
+                "RAILS_VERSION=7.2.1",
                 "-t",
-                "rails-new-3.2.3-7.1.3",
+                "rails-new-3.3.5-7.2.1",
                 "-",
             ]
         );
@@ -113,7 +113,7 @@ mod tests {
 
     #[test]
     fn build_image_with_user_id() {
-        let command = DockerClient::build_image("3.2.3", "7.1.3", Some(1000), None);
+        let command = DockerClient::build_image("3.3.5", "7.2.1", Some(1000), None);
 
         assert_eq!(command.get_program(), "docker");
 
@@ -124,13 +124,13 @@ mod tests {
             &[
                 "build",
                 "--build-arg",
-                "RUBY_VERSION=3.2.3",
+                "RUBY_VERSION=3.3.5",
                 "--build-arg",
-                "RAILS_VERSION=7.1.3",
+                "RAILS_VERSION=7.2.1",
                 "--build-arg",
                 "USER_ID=1000",
                 "-t",
-                "rails-new-3.2.3-7.1.3",
+                "rails-new-3.3.5-7.2.1",
                 "-",
             ]
         );
@@ -138,7 +138,7 @@ mod tests {
 
     #[test]
     fn build_image_with_group_id() {
-        let command = DockerClient::build_image("3.2.3", "7.1.3", None, Some(1000));
+        let command = DockerClient::build_image("3.3.5", "7.2.1", None, Some(1000));
 
         assert_eq!(command.get_program(), "docker");
 
@@ -149,13 +149,13 @@ mod tests {
             &[
                 "build",
                 "--build-arg",
-                "RUBY_VERSION=3.2.3",
+                "RUBY_VERSION=3.3.5",
                 "--build-arg",
-                "RAILS_VERSION=7.1.3",
+                "RAILS_VERSION=7.2.1",
                 "--build-arg",
                 "GROUP_ID=1000",
                 "-t",
-                "rails-new-3.2.3-7.1.3",
+                "rails-new-3.3.5-7.2.1",
                 "-",
             ]
         );
@@ -163,7 +163,7 @@ mod tests {
 
     #[test]
     fn run_image() {
-        let command = DockerClient::run_image("3.2.3", "7.1.3", vec!["my_app".to_string()]);
+        let command = DockerClient::run_image("3.3.5", "7.2.1", vec!["my_app".to_string()]);
 
         assert_eq!(command.get_program(), "docker");
 
@@ -182,7 +182,7 @@ mod tests {
                 &format!("{}:{}", current_dir, current_dir),
                 "-w",
                 current_dir,
-                "rails-new-3.2.3-7.1.3",
+                "rails-new-3.3.5-7.2.1",
                 "rails",
                 "new",
                 "my_app",
@@ -192,7 +192,7 @@ mod tests {
 
     #[test]
     fn get_help() {
-        let command = DockerClient::get_help("3.2.3", "7.1.3");
+        let command = DockerClient::get_help("3.3.5", "7.2.1");
 
         assert_eq!(command.get_program(), "docker");
 
@@ -203,7 +203,7 @@ mod tests {
             &[
                 "run",
                 "--rm",
-                "rails-new-3.2.3-7.1.3",
+                "rails-new-3.3.5-7.2.1",
                 "rails",
                 "new",
                 "--help",
diff --git a/src/rails_new.rs b/src/rails_new.rs
index e61b4ad..8fb41ff 100644
--- a/src/rails_new.rs
+++ b/src/rails_new.rs
@@ -6,9 +6,9 @@ pub struct Cli {
     #[clap(trailing_var_arg = true, required = true)]
     /// arguments passed to `rails new`
     pub args: Vec<String>,
-    #[clap(long, short = 'u', default_value = "3.3.4")]
+    #[clap(long, short = 'u', default_value = "3.3.5")]
     pub ruby_version: String,
-    #[clap(long, short = 'r', default_value = "7.2.0")]
+    #[clap(long, short = 'r', default_value = "7.2.1")]
     pub rails_version: String,
 
     #[command(subcommand)]
@@ -54,8 +54,8 @@ mod tests {
         let ruby_version = m.get_one::<String>("ruby_version").unwrap();
         let rails_version = m.get_one::<String>("rails_version").unwrap();
 
-        assert_eq!(ruby_version, "3.3.4");
-        assert_eq!(rails_version, "7.2.0");
+        assert_eq!(ruby_version, "3.3.5");
+        assert_eq!(rails_version, "7.2.1");
 
         Ok(())
     }