diff --git a/tools/ci/cibuild.sh b/tools/ci/cibuild.sh
index bb604ec567..4c405ac25d 100755
--- a/tools/ci/cibuild.sh
+++ b/tools/ci/cibuild.sh
@@ -63,6 +63,11 @@ function python-tools {
   export PYTHONUSERBASE
   add_path $PYTHONUSERBASE/bin
   pip3 install pexpect
+
+  # MCUboot's tool for image signing and key management
+  if ! command -v imgtool &> /dev/null; then
+    pip3 install imgtool
+  fi
 }
 
 function u-boot-tools {