Engineers worked through the night to deal with the leak which sparked road closures and evacuations of businesses at the Phoenix Retail Park in Linwood, Renfrewshire.
Police confirmed all roads and premises which were affected have now reopened.
Scottish Gas Networks, the firm which maintains gas services, said further work may be needed but this would be after peak travel time.
SGN spokesman Denis Kerby said: "Engineers from Scotland Gas Networks worked through the night to secure the leak and carry out repairs to the damaged pipe at the Phoenix retail park.
"The roads in the area have been reopened as have local businesses.
"We may need to carry out some further work this evening but this would be carried out after peak travel hours, and involve minimal disruption.
"We would like to thank everyone for their patience while our engineers dealt with this incident."
Gas leaked into the air when a medium pressure gas main – an 18in pipe – was cut by a JCB digger within the St James Business Park and Phoenix Retail Park in Paisley at 5pm yesterday.
Police, emergency services and SGN imposed a 500m safety zone around the scene of the leak, which was described by SGN as a "serious incident".
A Showcase Cinema, Asda supermarket and several restaurants, car dealerships and garages were closed.
SGN said a full investigation will be needed to establish how the contractors hit the pipe.
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