diff --git a/README.md b/README.md
index 8ee45634aac1e52b05b0d3f91f042d94f504a468..b38bbb42701fee170e9891d43fc585a13d12922d 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ netcdf-c-4.7.4.tar.gz
 netcdf-fortran-4.4.5.tar.gz
 netcdf-fortran-4.5.2.tar.gz
 netcdf-fortran-4.5.3.tar.gz
+petsc-3.14.5.tar.gz
 pixman-0.38.4.tar.gz
 pnetcdf-1.12.2.tar.gz
 szip-2.1.1.tar