diff --git a/OpenExposureData/Docs/OpenExposureData_Spec_v3.1.xlsx b/OpenExposureData/Docs/OpenExposureData_Spec_v3.1.xlsx deleted file mode 100644 index 18ab3233..00000000 Binary files a/OpenExposureData/Docs/OpenExposureData_Spec_v3.1.xlsx and /dev/null differ