diff --git a/install/outline-install.sh b/install/outline-install.sh
index 52fde65cf..436f4aadf 100644
--- a/install/outline-install.sh
+++ b/install/outline-install.sh
@@ -46,7 +46,7 @@ $STD apt-get install -y postgresql-16
 DB_NAME="outline"
 DB_USER="outline"
 DB_PASS="$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | cut -c1-13)"
-SECRET_KEY="$(openssl rand -base64 32 | tr -dc 'a-zA-Z0-9' | cut -c1-32)"
+SECRET_KEY="$(openssl rand -hex 32)"
 $STD sudo -u postgres psql -c "CREATE ROLE $DB_USER WITH LOGIN PASSWORD '$DB_PASS';"
 $STD sudo -u postgres psql -c "CREATE DATABASE $DB_NAME WITH OWNER $DB_USER ENCODING 'UTF8' TEMPLATE template0;"
 $STD sudo -u postgres psql -c "ALTER ROLE $DB_USER SET client_encoding TO 'utf8';"
@@ -103,4 +103,4 @@ msg_info "Cleaning up"
 rm -rf $temp_file
 $STD apt-get -y autoremove
 $STD apt-get -y autoclean
-msg_ok "Cleaned"
+msg_ok "Cleaned"
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