The actress recently visited refugee camps on the Tunisia-Libya border in her role as UN goodwill ambassador and appeared to show an amendment to one of her tattoos as she met with people in the facilities.
Jolie famously has the co-ordinates of the birth places of all of her children inked on her left upper arm, but it now appears that a seventh row of numbers has been added to the design.
According to Wonderwall, the first number in the reading is 35-north, which would suggest a connection with Algeria.
Jolie and Pitt are already parents to Maddox, 9, who was born in Cambodia; Pax, 7, who was adopted from Vietnam; Zahara, 6, originally from Ethiopia; Shiloh, 4, who was born in Namibia; and Vivienne and Knox, 2, who Jolie gave birth to in France.
Earlier this year, representatives for the actress denied reports that she was planning to adopt a child from Haiti.
> Angelina Jolie 'won't rule out more kids'