diff --git a/.gitignore b/.gitignore
index dfedda47f..0ca7c019e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ build/
 .vscode/
 node_modules/
 __pycache__/
-*.pyc
\ No newline at end of file
+*.pyc
+spec/**/generated
diff --git a/spec/Makefile b/spec/Makefile
index d4bb2cbb9..a82ae58bb 100644
--- a/spec/Makefile
+++ b/spec/Makefile
@@ -12,9 +12,13 @@ BUILDDIR      = _build
 help:
 	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
-.PHONY: help Makefile
+.PHONY: help Makefile clean
 
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+clean:
+	-rm -rf $(BUILDDIR)
+	-rm -rf "$(SOURCEDIR)/API_specification/generated"