Shareholders at AG Barr and Britvic have given their approval for the two companies to merge.
The result of the shareholder vote means that the merger is on track to be completed on 30 January, subject to regulatory approval.
The merger will result in the creation of a new company to be called Barr Britvic Soft Drinks, which will be led by AG Barr CEO Roger White.
Britvic shareholders will own 63% and AG Barr shareholders 37% of the new £1.5bn turnover company. The two soft drinks makers have forecast that the merger will result in synergies of £40m a year.
Britvic owns Robinsons and sells Pepsi under license in the UK. AG Barr makes Irn-Bru and Rubicon.