diff --git a/.gitattributes b/.gitattributes
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+# Settings to improve linguist data reporting (used by GitHub)
+*.v                     linguist-language=Verilog
+*.vh                    linguist-language=Verilog
+*.sql                   linguist-language=SQL
+
+# FIXME: All vendor files should be under third_party
+third_party/**          		linguist-vendored
+counter_test/counter_basys3.v		linguist-vendored
+picosoc_demo/simpleuart.v		linguist-vendored
+picosoc_demo/picosoc_noflash.v		linguist-vendored
+picosoc_demo/basys3_demo_no_roi.v	linguist-vendored
+picosoc_demo/progmem.v			linguist-vendored
+picosoc_demo/picorv32.v			linguist-vendored
+linux_litex_demo/baselitex_arty.v	linguist-vendored
+linux_litex_demo/VexRiscv_Linux.v	linguist-vendored