International rating agency Fitch Monday has revised up Poland's 2017 economic growth forecast to 4 percent, from a previous estimate of 3.3 percent.

"After a higher-than-expected increase of 3.9 percent in Q2 2017, Poland's GDP growth will reach 4 percent in this year," Fitch said in a report, adding that consumption benefits from a strong labor market and solid wage growth will contribute to the increased growth.

The agency also said that in the second half of 2017, Poland was expected to accelerate spending of European Union fund and it could cause a significant increase in construction and investments.

Fitch expects a slight slowdown in growth to 3.2 percent in 2018 and 2019, due to the base effect and gradual tightening of the monetary policy which is expected to start in 2018.

In July, Fitch confirmed Poland's long-term credit rating at A- with a stable outlook. A further review of Poland's creditworthiness was scheduled for Dec. 8.