diff --git a/Cargo.lock b/Cargo.lock
index e502d1eb..b2cd6105 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -29,6 +29,14 @@ name = "cfg-if"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "directories"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "failure"
 version = "0.1.1"
@@ -53,11 +61,27 @@ name = "libc"
 version = "0.2.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro2"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "quote"
 version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "quote"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.1.40"
@@ -76,6 +100,21 @@ name = "rustc-demangle"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "serde"
+version = "1.0.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "serde_derive"
+version = "1.0.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "syn"
 version = "0.11.11"
@@ -86,6 +125,16 @@ dependencies = [
  "unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "syn"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "synom"
 version = "0.11.3"
@@ -113,13 +162,25 @@ dependencies = [
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "toml"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "topgrade"
 version = "0.5.0"
 dependencies = [
+ "directories 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "which 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -128,6 +189,11 @@ name = "unicode-xid"
 version = "0.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "which"
 version = "2.0.0"
@@ -161,18 +227,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum backtrace-sys 0.1.23 (registry+https://github.com/rust-lang/crates.io-index)" = "bff67d0c06556c0b8e6b5f090f0eac52d950d9dfd1d35ba04e4ca3543eaf6a7e"
 "checksum cc 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)" = "49ec142f5768efb5b7622aebc3fdbdbb8950a4b9ba996393cb76ef7466e8747d"
 "checksum cfg-if 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "405216fd8fe65f718daa7102ea808a946b6ce40c742998fbfd3463645552de18"
+"checksum directories 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc2561db021b6f1321d0f16b67ed28ce843ef4610dfaa432e3ffa2e8a3050ebf"
 "checksum failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "934799b6c1de475a012a02dab0ace1ace43789ee4b99bcfbf1a2e3e8ced5de82"
 "checksum failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7cdda555bb90c9bb67a3b670a0f42de8e73f5981524123ad8578aafec8ddb8b"
 "checksum libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)" = "b685088df2b950fccadf07a7187c8ef846a959c142338a48f9dc0b94517eb5f1"
+"checksum proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "effdb53b25cdad54f8f48843d67398f7ef2e14f12c1b4cb4effc549a6462a4d6"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
+"checksum quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e44651a0dc4cdd99f71c83b561e221f714912d11af1a4dff0631f923d53af035"
 "checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum rustc-demangle 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "76d7ba1feafada44f2d38eed812bd2489a03c0f5abb975799251518b68848649"
+"checksum serde 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)" = "e9a2d9a9ac5120e0f768801ca2b58ad6eec929dc9d1d616c162f208869c2ce95"
+"checksum serde_derive 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)" = "0a90213fa7e0f5eac3f7afe2d5ff6b088af515052cc7303bd68c7e3b91a3fb79"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
+"checksum syn 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c67da57e61ebc7b7b6fff56bb34440ca3a83db037320b0507af4c10368deda7d"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
 "checksum synstructure 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a761d12e6d8dcb4dcf952a7a89b475e3a9d69e4a69307e01a470977642914bd"
 "checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
+"checksum toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a0263c6c02c4db6c8f7681f9fd35e90de799ebd4cfdeab77a38f4ff6b3d8c0d9"
 "checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum which 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49c4f580e93079b70ac522e7bdebbe1568c8afa7d8d05ee534ee737ca37d2f51"
 "checksum winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "773ef9dcc5f24b7d850d0ff101e542ff24c3b090a9768e03ff889fdef41f00fd"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
diff --git a/Cargo.toml b/Cargo.toml
index 1109a358..338eb3f0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,11 @@ authors = ["Roey Darwish Dror <roey.ghost@gmail.com>"]
 exclude = ["doc/screenshot.gif"]
 
 [dependencies]
-which = "2.0.0"
-termion = "1.5.1"
+directories = "0.10.0"
 failure = "0.1.1"
 failure_derive = "0.1.1"
+serde = "1.0.66"
+serde_derive = "1.0.66"
+termion = "1.5.1"
+toml = "0.4.6"
+which = "2.0.0"
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 00000000..9a7f0a6a
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,31 @@
+use directories;
+use failure;
+use std::collections::BTreeMap;
+use std::fs;
+use toml;
+
+#[derive(Deserialize, Default)]
+pub struct Config {
+    commands: Option<BTreeMap<String, String>>,
+    git_repos: Option<Vec<String>>,
+}
+
+impl Config {
+    pub fn read() -> Result<Config, failure::Error> {
+        let base_dirs = directories::BaseDirs::new();
+        let config_path = base_dirs.config_dir().join("topgrade.toml");
+        if !config_path.exists() {
+            return Ok(Default::default());
+        }
+
+        Ok(toml::from_str(&fs::read_to_string(config_path)?)?)
+    }
+
+    pub fn commands(&self) -> &Option<BTreeMap<String, String>> {
+        &self.commands
+    }
+
+    pub fn git_repos(&self) -> &Option<Vec<String>> {
+        &self.git_repos
+    }
+}
diff --git a/src/git.rs b/src/git.rs
index 044245d4..4064e068 100644
--- a/src/git.rs
+++ b/src/git.rs
@@ -1,5 +1,6 @@
 use super::Check;
 use failure::Error;
+use std::collections::HashSet;
 use std::path::{Path, PathBuf};
 use std::process::Command;
 use which::which;
@@ -55,4 +56,10 @@ impl Git {
 
         Ok(None)
     }
+
+    pub fn insert_if_valid<P: AsRef<Path>>(&self, git_repos: &mut HashSet<String>, path: P) {
+        if let Some(repo) = self.get_repo_root(path) {
+            git_repos.insert(repo);
+        }
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index 2816b77f..b35b4804 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,15 @@
+extern crate directories;
 extern crate failure;
 extern crate which;
 #[macro_use]
 extern crate failure_derive;
 extern crate termion;
+extern crate toml;
+#[macro_use]
+extern crate serde_derive;
+extern crate serde;
 
+mod config;
 mod git;
 mod linux;
 mod npm;
@@ -12,6 +18,7 @@ mod steps;
 mod terminal;
 mod vim;
 
+use config::Config;
 use failure::Error;
 use git::Git;
 use report::{Report, Reporter};
@@ -76,20 +83,19 @@ fn main() -> Result<(), Error> {
     let mut git_repos: HashSet<String> = HashSet::new();
     let terminal = Terminal::new();
     let mut reports = Report::new();
+    let config = Config::read()?;
 
-    {
-        let mut collect_repo = |path| {
-            if let Some(repo) = git.get_repo_root(path) {
-                git_repos.insert(repo);
-            }
-        };
+    git.insert_if_valid(&mut git_repos, home_path(".emacs.d"));
 
-        collect_repo(home_path(".emacs.d"));
+    if cfg!(unix) {
+        git.insert_if_valid(&mut git_repos, home_path(".zshrc"));
+        git.insert_if_valid(&mut git_repos, home_path(".oh-my-zsh"));
+        git.insert_if_valid(&mut git_repos, home_path(".tmux"));
+    }
 
-        if cfg!(unix) {
-            collect_repo(home_path(".zshrc"));
-            collect_repo(home_path(".oh-my-zsh"));
-            collect_repo(home_path(".tmux"));
+    if let Some(custom_git_repos) = config.git_repos() {
+        for git_repo in custom_git_repos {
+            git.insert_if_valid(&mut git_repos, git_repo);
         }
     }
 
@@ -201,6 +207,13 @@ fn main() -> Result<(), Error> {
         upgrade_macos().report("System upgrade", &mut reports);;
     }
 
+    if let Some(commands) = config.commands() {
+        for (name, command) in commands {
+            terminal.print_separator(name);
+            run_custom_command(&command).report(name.as_ref(), &mut reports);
+        }
+    }
+
     let mut reports: Vec<_> = reports.into_iter().collect();
     reports.sort();
 
diff --git a/src/steps.rs b/src/steps.rs
index e6096d04..96ac224e 100644
--- a/src/steps.rs
+++ b/src/steps.rs
@@ -220,3 +220,14 @@ pub fn upgrade_debian(
 
     Ok(())
 }
+
+pub fn run_custom_command(command: &str) -> Result<(), failure::Error> {
+    Command::new("sh")
+        .arg("-c")
+        .arg(command)
+        .spawn()?
+        .wait()?
+        .check()?;
+
+    Ok(())
+}