diff --git a/src/system/Firmware.cpp b/src/system/Firmware.cpp
index 5408c43..b2e249f 100644
--- a/src/system/Firmware.cpp
+++ b/src/system/Firmware.cpp
@@ -56,6 +56,8 @@
     , m_srSubscribeOps(std::make_shared<::sysrepo::Subscribe>(m_srSessionOps))
     , m_srSubscribeRPC(std::make_shared<::sysrepo::Subscribe>(m_srSessionRPC))
 {
+    utils::ensureModuleImplemented(m_srSessionOps, "czechlight-system", "2021-01-13");
+
     {
         auto raucOperation = m_rauc->operation();
         auto raucLastError = m_rauc->lastError();