Special Minister of State Scott Ryan has been forced to take extended leave for health reasons.
The Victorian senator took time off earlier in July to address some "long-standing medical issues".
"In attending to these, a number of complications developed, some of which require further attention," he said in a statement on Friday.
As a result, he's asked for additional leave from his Senate and ministerial duties.
"I will return to full duties as soon as I am recovered," he said.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Mathias Cormann will act as Special Minister of State from Monday until his return.
"I ask for privacy for myself and my family at this time."
