The investment-grade rating's outlook was revised down to stable from positive following the upgrade.
"Increased macroeconomic policy credibility, a flexible exchange rate regime, strengthened external liquidity position and moderate external debt have steadily improved the economy's capacity to absorb external shocks," Erich Arispe, sovereign credit analyst at Fitch said in a statement.
Both Standard & Poor's and Moody's Investors Service rateD Colombia investment grade earlier this year. Fitch's rating is now equal to S&P's BBB-minus and Moody's Baa3.
