The 29-year-old singer and her partner decided to celebrate the nuptials by going through the rituals one more time, reported Ace Showbiz.
"Renewed our vows today... It's incredible to thank each other for the past year as husband and wife. Here's to another year!(sic)," Rimes tweeted.
The couple then enjoyed a day out by the sea, although Rimes did end up accidentally injuring herself in the process.
"Eddie and I went climbing on the rocks in the ocean yesterday to see the thousands of crabs. I did not realize till now just how dab I kicked a rock with two of my toes...OUCH(sic)," she added. PTI JCH