diff --git a/install.sh b/install.sh
index 887f7ac..e32f76e 100755
--- a/install.sh
+++ b/install.sh
@@ -1,31 +1,33 @@
 #!/usr/bin/env bash
 set -e
 if [[ -n "$MSYSTEM" ]]; then
   echo "Seems like you are using an MSYS2-based system (such as Git Bash) which is not supported. Please use WSL instead.";
   exit 1
 fi
 
+umask 002
+
 source "$(dirname $0)/install/_lib.sh"  # does a `cd .../install/`, among other things
 
 source dc-detect-version.sh
 source parse-cli.sh
 source check-latest-commit.sh
 source error-handling.sh
 source check-minimum-requirements.sh
 source create-docker-volumes.sh
 source ensure-files-from-examples.sh
 source generate-secret-key.sh
 source replace-tsdb.sh
 source update-docker-images.sh
 source build-docker-images.sh
 source turn-things-off.sh
 source set-up-zookeeper.sh
 source install-wal2json.sh
 source bootstrap-snuba.sh
 source create-kafka-topics.sh
 source upgrade-postgres.sh
 source set-up-and-migrate-database.sh
 source migrate-file-storage.sh
 source relay-credentials.sh
 source geoip.sh
 source wrap-up.sh