We assess whether and how entrepreneurs' digital identities change in response to entrepreneurial failure based on a sample of 760 entrepreneurs who experienced failure. We analyze a longitudinal dataset of Twitter messages before, during, and after a business failure with a language-based method of computerized text analysis. The results of our explorative research indicate that the financial, social, and psychological consequences of failure are reflected in entrepreneurs' Tweets and lead to changes in their digital identities. Among others, entrepreneurs' language decreases in emotional tone and indicates increased psychological distress. Simultaneously, we observe higher levels of self-assurance and reflection after failure. We conclude by outlining the potential of using Twitter-generated digital footprints in future entrepreneurship research. •Explorative study on the individual consequences of entrepreneurial failure•Uses longitudinal Twitter data captured before, during, and after failure•Draws on computerized text analysis to assess entrepreneurs' digital identities•Results document failure's profound, identity-changing consequences•Outlines the potentials of using digital footprints in entrepreneurship research