diff --git a/k8s_gitlab_borg/__main__.py b/k8s_gitlab_borg/__main__.py
index 88b8dd8..858f878 100644
--- a/k8s_gitlab_borg/__main__.py
+++ b/k8s_gitlab_borg/__main__.py
@@ -510,7 +510,7 @@ def main():
                         if event & select.POLLIN or event & select.POLLPRI:
                             if rfd == proc.stdout.fileno():
                                 logger.debug("Reading from stdout...")
-                                if chunk := proc.stdout.read(PIPE_BUF):
+                                if chunk := proc.stdout.buffer.read(PIPE_BUF):
                                     logger.debug("Done, length %d", len(chunk))
                                     stdout_line_buffer.extend(chunk)
                                 while True:
@@ -524,7 +524,7 @@ def main():
                                         break
                             if rfd == proc.stderr.fileno():
                                 logger.debug("Reading from stderr...")
-                                if chunk := proc.stderr.read(PIPE_BUF):
+                                if chunk := proc.stderr.buffer.read(PIPE_BUF):
                                     logger.debug("Done, length %d", len(chunk))
                                     stderr_line_buffer.extend(chunk)
                                 while True: