diff --git a/.bumpversion.toml b/.bumpversion.toml
index 26e90be..0971522 100644
--- a/.bumpversion.toml
+++ b/.bumpversion.toml
@@ -1,4 +1,4 @@
-current_version = "1.0.0"
+current_version = "1.1.1"
 commit = true
 tag = true
 message = "chore: bump {current_version} → {new_version}"
@@ -11,8 +11,8 @@ type = "string"
 values = ["alpha", "beta", "stable"]
 
 [file."Cargo.toml"]
-format = 'version = "{version}"'
+formats = ['version = "{version}"']
 
 [file."Cargo.lock"]
-format = """name = "bump2version"
-version = "{version}""""
+formats = ["""name = "bump2version"
+version = "{version}""""]
diff --git a/Cargo.lock b/Cargo.lock
index f5f2424..63177c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -61,7 +61,7 @@ dependencies = [
 
 [[package]]
 name = "bump2version"
-version = "1.0.0"
+version = "1.1.1"
 dependencies = [
  "clap",
  "regex",
diff --git a/Cargo.toml b/Cargo.toml
index 73bdd09..5a74359 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bump2version"
-version = "1.0.0"
+version = "1.1.1"
 edition = "2021"
 description = "⬆️ Easily manage version numbers in your projects."
 license = "MIT"
@@ -13,10 +13,6 @@ authors = [
   "TECHNOFAB <admin@technofab.de>",
 ]
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-[lib]
-crate-type = ["cdylib"]
-
 [dependencies]
 clap = { version = "4.5.1", features = ["derive"] }
 regex = "1.10.3"
diff --git a/src/cli.rs b/src/cli.rs
old mode 100755
new mode 100644
index cf8a99c..f07903f
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -24,6 +24,10 @@ pub(crate) struct Cli {
     #[arg(short = 'n', long = "dry-run", default_value_t = false)]
     pub(crate) dry_run: bool,
 
+    /// Current version
+    #[arg(long = "current-version", value_name = "VERSION")]
+    pub(crate) current_version: Option<String>,
+
     /// New version that should be in the files.
     #[arg(long = "new-version", value_name = "VERSION")]
     pub(crate) new_version: Option<String>,
diff --git a/src/config.rs b/src/config.rs
index 3da1183..a2e0e1d 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -4,7 +4,7 @@ use serde_derive::Deserialize;
 
 #[derive(Debug, Clone, Deserialize)]
 pub(crate) struct Config {
-    pub(crate) current_version: String,
+    pub(crate) current_version: Option<String>,
     pub(crate) message: Option<String>,
     pub(crate) commit: bool,
     pub(crate) tag: bool,
@@ -13,8 +13,8 @@ pub(crate) struct Config {
     #[serde(default = "default_serialize")]
     pub(crate) serialize: String,
 
-    pub(crate) part: HashMap<String, Part>,
-    pub(crate) file: HashMap<String, File>,
+    pub(crate) part: Option<HashMap<String, Part>>,
+    pub(crate) file: Option<HashMap<String, File>>,
 }
 
 #[derive(Debug, Clone, Deserialize)]
@@ -35,8 +35,8 @@ pub(crate) struct Part {
 
 #[derive(Debug, Clone, Deserialize)]
 pub(crate) struct File {
-    /// Format to replace, eg. `current_version = "{version}"`
-    pub(crate) format: String,
+    /// Formats to replace, eg. `current_version = "{version}"`
+    pub(crate) formats: Vec<String>,
 }
 
 fn default_parse() -> String {
diff --git a/src/lib.rs b/src/lib.rs
deleted file mode 100644
index 022eb5e..0000000
--- a/src/lib.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
-#![doc = include_str!("../README.md")]
-
-pub(crate) mod cli;
-pub(crate) mod config;
-pub(crate) mod utils;
diff --git a/src/main.rs b/src/main.rs
index ace6f87..45903fd 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -38,12 +38,23 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         }
     };
 
-    let current_version = config.current_version.clone();
-
-    let attempted_new_version = args
-        .new_version
+    let current_version = args
+        .current_version
         .clone()
-        .or(attempt_version_bump(args.clone(), config.clone()));
+        .or(config.current_version.clone());
+
+    if current_version.is_none() {
+        error!("No current version could be determined, either set in config or pass as arg");
+        exit(1);
+    }
+
+    let current_version = current_version.unwrap();
+
+    let attempted_new_version = args.new_version.clone().or(attempt_version_bump(
+        args.clone(),
+        config.clone(),
+        current_version.clone(),
+    ));
 
     if attempted_new_version.is_some() {
         let new_version = attempted_new_version.clone().unwrap();
@@ -57,7 +68,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             .or(config.message)
             .unwrap_or("Bump version: {current_version} → {new_version}".to_string());
 
-        let files: Vec<&String> = config.file.keys().collect();
+        let config_files = config.file.unwrap_or_default();
+        let files: Vec<&String> = config_files.keys().collect();
 
         // Check if Git working directory is clean
         if fs::metadata(".git").is_ok() {
@@ -83,22 +95,24 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         // Update version in specified files
         info!(amount = &files.len(), "Updating version in files");
         for path in files.clone() {
-            let content = fs::read_to_string(path)?;
-            let format = &config.file.get(path).unwrap().format;
+            let mut content = fs::read_to_string(path)?;
+            let formats = &config_files.get(path).unwrap().formats.clone();
 
-            let old_line = format.replace("{version}", &current_version);
-            if !content.contains(&old_line) {
-                warn!(
-                    current_version,
-                    path, "Did not find current version in file"
-                );
+            for format in formats {
+                let old_line = format.replace("{version}", &current_version);
+                if !content.contains(&old_line) {
+                    warn!(
+                        current_version,
+                        path, "Did not find current version in file"
+                    );
+                }
+
+                let new_line = format.replace("{version}", &new_version);
+                content = content.replace(&old_line, &new_line);
             }
 
-            let new_line = format.replace("{version}", &new_version);
-            let updated_content = content.replace(&old_line, &new_line);
-
             if !dry_run {
-                fs::write(path, updated_content)?;
+                fs::write(path, content)?;
             }
         }
 
diff --git a/src/utils.rs b/src/utils.rs
index 7e31e12..15d0606 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -6,7 +6,11 @@ use std::collections::HashMap;
 use std::ops::Index;
 use tracing::{error, trace};
 
-pub fn attempt_version_bump(args: Cli, config: Config) -> Option<String> {
+pub(crate) fn attempt_version_bump(
+    args: Cli,
+    config: Config,
+    current_version: String,
+) -> Option<String> {
     let parse_regex = config.parse;
     let regex = match Regex::new(&parse_regex) {
         Ok(r) => r,
@@ -16,7 +20,6 @@ pub fn attempt_version_bump(args: Cli, config: Config) -> Option<String> {
         }
     };
 
-    let current_version = config.current_version;
     let mut parsed: HashMap<String, String> = HashMap::new();
 
     if let Some(captures) = regex.captures(&current_version) {
@@ -41,7 +44,7 @@ pub fn attempt_version_bump(args: Cli, config: Config) -> Option<String> {
 
     for label in order.clone() {
         if let Some(part) = parsed.get_mut(label) {
-            let part_cfg = part_configs.get(label);
+            let part_cfg = part_configs.as_ref().and_then(|c| c.get(label));
 
             if label == args.bump {
                 match part_cfg