The two Koreas agreed to re-open the Kaesong Industrial Complex for “trial operations” on September 16, South Korea’s Ministry of Unification announced early Wednesday morning.

The announcement came after hours of intensive inter-Korean negotiations to devise a framework for bolstering confidence, trust and sustainable growth in the complex’s future operations.

But despite being the latest indication of warming relations between the two Koreas, some observers say that more needs to be done to rebuild investor confidence in the complex, shut down in April amid heightened military tensions.

“North Korea in general, but Kim Jong Un in particular, have a long