diff --git a/debian/control b/debian/control
index cd8104f1..9f4895bd 100644
--- a/debian/control
+++ b/debian/control
@@ -9,7 +9,8 @@ Build-Depends: bzr,
                git,
                python3,
                python3-setuptools,
-               python3-yaml
+               python3-yaml,
+               python3-attr
 Standards-Version: 3.9.5
 Homepage: https://github.com/CanonicalLtd/subiquity
 X-Python3-Version: >= 3.3
@@ -20,6 +21,7 @@ Package: subiquity
 Architecture: all
 Depends: curtin,
          python3,
+         python3-attr,
          subiquitycore,
          ${misc:Depends},
          ${python3:Depends}
diff --git a/installer/geninstaller b/installer/geninstaller
index eb8c7491..7042e324 100755
--- a/installer/geninstaller
+++ b/installer/geninstaller
@@ -46,6 +46,7 @@ INSTALLER_DEPS=(
   "lvm2"
   "mdadm"
   "petname"
+  "python3-attr"
   "python3-urwid"
   "python3-pyudev"
   "python-urwid"