diff --git a/src/main/python/ddadevops/c4k_mixin.py b/src/main/python/ddadevops/c4k_mixin.py
index bfb0592..b5469dd 100644
--- a/src/main/python/ddadevops/c4k_mixin.py
+++ b/src/main/python/ddadevops/c4k_mixin.py
@@ -1,3 +1,4 @@
+import deprecation
 from .domain import C4kBuild, DnsRecord
 from .devops_build import DevopsBuild
 from .credential import gopass_field_from_path, gopass_password_from_path
diff --git a/src/main/python/ddadevops/devops_docker_build.py b/src/main/python/ddadevops/devops_docker_build.py
index 11ca1d6..aa800e2 100644
--- a/src/main/python/ddadevops/devops_docker_build.py
+++ b/src/main/python/ddadevops/devops_docker_build.py
@@ -1,3 +1,4 @@
+import deprecation
 from .domain import DockerBuild
 from .application import DockerBuildService
 from .devops_build import DevopsBuild, create_devops_build_config