diff --git a/var/spack/repos/builtin/packages/rdc/package.py b/var/spack/repos/builtin/packages/rdc/package.py
index c0921dac861..bb6314b420e 100644
--- a/var/spack/repos/builtin/packages/rdc/package.py
+++ b/var/spack/repos/builtin/packages/rdc/package.py
@@ -4,6 +4,8 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 
+import re
+
 from spack.package import *
 
 
diff --git a/var/spack/repos/builtin/packages/rocalution/package.py b/var/spack/repos/builtin/packages/rocalution/package.py
index bf1a2619317..d0147523f88 100644
--- a/var/spack/repos/builtin/packages/rocalution/package.py
+++ b/var/spack/repos/builtin/packages/rocalution/package.py
@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import itertools
+import re
 
 from spack.package import *