diff --git a/README.md b/README.md
index 93224edf..8009dc99 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,8 @@ Just run `topgrade`. It will run the following steps:
 * Node
   * Run `yarn global update` if yarn is installed.
   * Run `npm update -g` if NPM is installed and `npm root -g` is a path inside your home directory.
-* Run `composer global update` if Composer's home directory is inside the home directory of the user.
+* Run `composer global update` if Composer's home directory is inside the home directory of the
+  user. Run `valet install` after.
 * Upgrade Atom packages
 * Run `gem upgrade --user-install` if `~/.gem` exists
 * **Linux**: Update Flatpak packages
diff --git a/src/steps/generic.rs b/src/steps/generic.rs
index b20a1aad..a716c9f6 100644
--- a/src/steps/generic.rs
+++ b/src/steps/generic.rs
@@ -248,6 +248,11 @@ pub fn run_composer_update(base_dirs: &BaseDirs, dry_run: bool) -> Option<(&'sta
                         .spawn()?
                         .wait()?
                         .check()?;
+
+                    if let Some(valet) = utils::which("valet") {
+                        Executor::new(&valet, dry_run).arg("install").spawn()?.wait()?.check()?;
+                    }
+
                     Ok(())
                 }()
                 .is_ok();