1 files changed, 3 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index 67b16555..45010773 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,3 +79,6 @@ nohup.out
 */.#*
 *.smt2
 .DS_Store
+
+# Isabelle output
+backends/IsabelleHOL/output