diff --git a/src/Action/JSLinter.php b/src/Action/JSLinter.php
index 4e28438..2e71a41 100644
--- a/src/Action/JSLinter.php
+++ b/src/Action/JSLinter.php
@@ -13,6 +13,7 @@
 use function count;
 use function escapeshellarg;
 use function preg_match;
+use function sprintf;
 
 final class JSLinter extends Action
 {
diff --git a/src/Action/JSPrettier.php b/src/Action/JSPrettier.php
index e8de498..70645e9 100644
--- a/src/Action/JSPrettier.php
+++ b/src/Action/JSPrettier.php
@@ -13,6 +13,7 @@
 use function count;
 use function escapeshellarg;
 use function preg_match;
+use function sprintf;
 
 final class JSPrettier extends Action
 {