The Northern Ireland international has arrived at Huish Park until December 19 and brings a wealth of experience to Terry Skiverton's depleted squad.
The winger has seen limited action Ashton Gate and Robins manager Keith Millen is hoping Sproule can boost his fitness levels with the Glovers.
"Obviously Ivan's been frustrated with the lack of games this season and this loan gives him the opportunity to get some football under his belt," he told the club's official website.
"They've got four matches during his stay there and it means he can boost his fitness levels with the opportunity of coming back to us ahead of the hectic Christmas period."
Source: PA
Source: PA