In the years 2021-2024, we monitored changes in beetle communities (Coleoptera). Using the same methodology (Malaise trap) and in the same place (oak forest), we found a total of 784 species of beetles. An increase in air temperature causes an increase in the diversity of the beetle community. Phytophagous species of beetles dominated 36%. New species for the fauna of Slovakia were also found in the beetle communities: Clypastraea reitteri and Mordellistena microscopica and several rare and indicative species