Purpose: Despite the positive impact of professional learning communities (PLCs) in improving teaching practices, many teachers still struggle to effectively integrate information and communication technologies (ICTs) into their teaching and learning. Drawing from human capital theory and spillover effects, this paper examines how teachers PLCs can facilitate ICT integration. Design/methodology/approach: Using a qualitative methodology, the researchers designed a phenomenological study. From semi-structured interviews, data were collected from 15 selected secondary school teachers from four selected secondary schools in Tanzania. Findings: The study revealed that teachers use various strategies to enhance ICT integration in teaching practices, namely, community collaboration, practice-based approaches to ICT integration and the utilization of digital learning tools in instructional practices. Furthermore, the results showed several constraints on the ability of teachers' PLCs to encourage ICT integration. These constraints were divided into three parts, i.e. major challenges at the macro, meso and micro levels. Practical implications: The paper has the potential to inform policy and practice, particularly in the area of PLCs. Also, it helps to better understand the changing practices with ICTs through PLCs when there are insufficient resources for ICT integration. Originality/value: To support teachers in using ICTs in their instructional practices, it is essential to build their capacities through PLCs to increase their confidence and competence in ICT integration.