Purpose This paper aims to identify and conceptualize a set of relational capabilities that school libraries in the Alentejo region of Portugal develop for acquiring new knowledge that exists externally in the wider community. Design/methodology/approach A qualitative research design operationalized via case studies was followed for the empirical analysis. Empirical findings are based on the analysis of the 84 narrative reports submitted by school libraries as part of a national performance evaluation exercise that took place between 2010 and 2012. Data analysis followed the techniques of inductive data categorization, within case-analysis, and cross-case analysis. Findings The exploration of the relational capabilities that school libraries in the Alentejo region of Portugal develop for acquiring new knowledge that exists externally in the community resulted in the identification of relationships that school libraries in the region have established to acquire new knowledge: connecting with and supporting organizations committed to civic engagement; facilitating discussions about challenging issues through strategic partnerships; convening community conversations to identify shared concerns and solutions; and embracing local culture to foster endogenous development. Originality/value The ability to seek and recognize the value of new and external knowledge, assimilate it and apply it to organizational ends has been traditionally linked to the concept of absorptive capacity. While absorptive capacity literature in business settings is prolific, literature that focuses on school libraries’ ability to identify and explore external knowledge and applying it to improve their performance is scarce. Focusing on the specific context of the Alentejo region of Portugal as an archetypical rural area, this paper identifies how knowledge existing externally in the community is absorbed by rural school libraries through specific relational capabilities that reflect school libraries’ community orientation and engagement in participatory processes that develop social resilience.