diff --git a/Jenkinsfile b/Jenkinsfile
index eeafa45..1b979d6 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -30,7 +30,7 @@ pipeline {
                 }
             }
             steps {
-                sh "apt-get update && apt-get install -y git ca-certificates gcc make libffi-dev"
+                sh "sudo apt-get update && sudo apt-get install -y git ca-certificates gcc make libffi-dev"
                 sh "git clone https://github.com/ashinn/chibi-scheme.git --depth=1"
                 sh "rake -j8 -C chibi-scheme"
                 sh "make -j8 -C chibi-scheme install"