diff --git a/Kconfig b/Kconfig
index 694c37d85fc0..2f45764a5bc2 100644
--- a/Kconfig
+++ b/Kconfig
@@ -43,6 +43,12 @@ comment "Some configuration options may not be here. Use CFLAGS instead."
 comment "!! ERROR: There are conflicting modules active !!"
     depends on ERROR_MODULES_CONFLICT != ""
 
+config RIOT_CI_BUILD
+    bool "CI build"
+    help
+        Indicates that the CI is building. This may add additional modules
+        for the sake of testing.
+
 config TEST_KCONFIG
     bool
     default y if '$(TEST_KCONFIG)' = '1'
diff --git a/makefiles/kconfig.mk b/makefiles/kconfig.mk
index 189d13c68509..853dbc20cd97 100644
--- a/makefiles/kconfig.mk
+++ b/makefiles/kconfig.mk
@@ -121,6 +121,11 @@ ifeq (1,$(DEVELHELP))
   RIOT_CONFIG_DEVELHELP ?= y
 endif
 
+# Expose RIOT_CI_BUILD to kconfig
+ifeq (1,$(RIOT_CI_BUILD))
+  RIOT_CONFIG_RIOT_CI_BUILD ?= y
+endif
+
 # export variable to make it visible in other Makefiles
 export SHOULD_RUN_KCONFIG