Lincoln eased their relegation fears as they won at 10-man Forest Green.
The hosts had Jamie Turley sent off for a professional foul when he brought down Francis Laurent and Alan Power converted the resulting penalty.
Lincoln sealed their first away win in five league games as Power crossed for Laurent to slam into the top corner.
Forest Green had opportunities in the last 10 minutes but both Matty Taylor and James Norwood had efforts tipped away by Imps goalkeeper Paul Farman.
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Forest Green Rovers manager Dave Hockaday told BBC Radio Gloucestershire:
"We shot ourselves in the foot, we're the architects of our own downfall. If you don't put your chances in the goal, you don't win games.
"We passed it around and gave them problems but then someone else made a silly mistake around our box and they put the second goal in.
"I can't have a go at the lads for a lack of effort, they gave it a really good go, but I think our inexperience has shown through in the last couple of games."
Lincoln City manager David Holdsworth told BBC Lincolnshire:
"We passed the ball well and at time we were probably trying to be too perfect, but I'm encouraging that passing and movement and there were some very good attacking performances.
"Two-nil is still a tricky scoreline in this league because one goal can give the other side the impetus but I felt we managed those final minutes well.
"It's three games unbeaten now which is the most important thing for me and we've come here and done that against a side who haven't been beaten for a while."