diff --git a/.github/actions/check-pharmr/action.yml b/.github/actions/check-pharmr/action.yml
index 16134f5..3f1e7f6 100644
--- a/.github/actions/check-pharmr/action.yml
+++ b/.github/actions/check-pharmr/action.yml
@@ -44,7 +44,7 @@ runs:
         commit = subprocess.getoutput("git -C ../pharmpy_repo rev-parse HEAD")
         with open("R/install.R", "r") as fp:
             lines = fp.readlines()
-        lines[0] = f'"{commit}"'
+        lines[0] = f'"{commit}"\n'
         with open("R/install.R", "w") as fp:
             for line in lines:
                 fp.write(line)