diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 58e17524e3b..927e5704724 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -83,3 +83,4 @@ jobs:
             PYGMT_USE_EXTERNAL_DISPLAY="false" python -m pytest -r P --pyargs pygmt --codspeed
         env:
           GMT_LIBRARY_PATH: /usr/share/miniconda/lib/
+          PROJ_LIB: /usr/share/miniconda/share/proj