diff --git a/.gitattributes b/.gitattributes
index d3f5a12fa..3bef1a9dd 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,2 @@
-
+# Shell scripts must keep LF endings — a CRLF shebang breaks execution on HPC/Linux.
+*.sh eol=lf
diff --git a/release.sh b/release.sh
index d5a6646d0..fde2f648e 100755
--- a/release.sh
+++ b/release.sh
@@ -1,31 +1,31 @@
-#!/usr/bin/env bash
-
-export PACKAGE_NAME=autolens
-
-rm -rf $p/dist
-rm -rf $p/build
-
-set -e
-
-export VERSION=$1
-
-cat $PACKAGE_NAME/__init__.py | grep -v __version__ > temp
-
-cat temp > $PACKAGE_NAME/__init__.py
-rm temp
-echo "__version__ = '"$VERSION"'" >> $PACKAGE_NAME/__init__.py
-
-git add $PACKAGE_NAME/__init__.py
-
-set +e
-git commit -m "Incremented version number"
-set -e
-
-python3 setup.py sdist bdist_wheel
-twine upload dist/* --skip-existing --username $PYPI_USERNAME --password $PYPI_PASSWORD
-
-
-git push --tags
-
-rm -rf $p/dist
-rm -rf $p/build
+#!/usr/bin/env bash
+
+export PACKAGE_NAME=autolens
+
+rm -rf $p/dist
+rm -rf $p/build
+
+set -e
+
+export VERSION=$1
+
+cat $PACKAGE_NAME/__init__.py | grep -v __version__ > temp
+
+cat temp > $PACKAGE_NAME/__init__.py
+rm temp
+echo "__version__ = '"$VERSION"'" >> $PACKAGE_NAME/__init__.py
+
+git add $PACKAGE_NAME/__init__.py
+
+set +e
+git commit -m "Incremented version number"
+set -e
+
+python3 setup.py sdist bdist_wheel
+twine upload dist/* --skip-existing --username $PYPI_USERNAME --password $PYPI_PASSWORD
+
+
+git push --tags
+
+rm -rf $p/dist
+rm -rf $p/build