diff --git a/meta-openembedded/meta-python/recipes-devtools/python/python-iso8601.inc b/meta-openembedded/meta-python/recipes-devtools/python/python-iso8601.inc
index 61e9abb..a70843e 100644
--- a/meta-openembedded/meta-python/recipes-devtools/python/python-iso8601.inc
+++ b/meta-openembedded/meta-python/recipes-devtools/python/python-iso8601.inc
@@ -8,6 +8,7 @@
 
 RDEPENDS_${PN} += "\
     ${PYTHON_PN}-datetime \
+    ${PYTHON_PN}-numbers \
 "
 
 BBCLASSEXTEND = "native nativesdk"