diff --git a/.gitignore b/.gitignore
index e06c678b6..7e09ed652 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+#
+ subprojects/mctc-lib/subprojects/json-fortran-8.2.5.wrap
 # Prerequisites
 *.d