diff --git a/manticore/install-root-debian b/manticore/install-root-debian
index 1d807db..4f29fa8 100644
--- a/manticore/install-root-debian
+++ b/manticore/install-root-debian
@@ -2,5 +2,4 @@
 
 set -eu -o pipefail
 
-apt-get update
 apt-get -y install z3