diff --git a/scripts/jison.sh b/scripts/jison.sh
deleted file mode 100644
index 1c6b4a872..000000000
--- a/scripts/jison.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-node node_modules/jison/lib/cli.js src/diagrams/classDiagram/parser/classDiagram.jison       -o src/diagrams/classDiagram/parser/classDiagram.js
-node node_modules/jison/lib/cli.js src/diagrams/sequenceDiagram/parser/sequenceDiagram.jison -o src/diagrams/sequenceDiagram/parser/sequenceDiagram.js
-node node_modules/jison/lib/cli.js src/diagrams/example/parser/example.jison                 -o src/diagrams/example/parser/example.js
-node node_modules/jison/lib/cli.js src/diagrams/flowchart/parser/flow.jison                  -o src/diagrams/flowchart/parser/flow.js
-node node_modules/jison/lib/cli.js src/diagrams/flowchart/parser/dot.jison                   -o src/diagrams/flowchart/parser/dot.js
-node node_modules/jison/lib/cli.js src/diagrams/gantt/parser/gantt.jison                     -o src/diagrams/gantt/parser/gantt.js
-node node_modules/jison/lib/cli.js src/diagrams/gitGraph/parser/gitGraph.jison               -o src/diagrams/gitGraph/parser/gitGraph.js
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