diff --git a/.github/workflows/Fortran.yml b/.github/workflows/Fortran.yml
index 24fd3bdc6..54bfee63a 100644
--- a/.github/workflows/Fortran.yml
+++ b/.github/workflows/Fortran.yml
@@ -2,7 +2,7 @@ name: Grid and Mesh Solver
 on: [push]
 
 env:
-  PETSC_VERSION: '3.20.1'
+  PETSC_VERSION: '3.20.3'
   HOMEBREW_NO_ANALYTICS: 'ON'     # Make Homebrew installation a little quicker
   HOMEBREW_NO_AUTO_UPDATE: 'ON'
   HOMEBREW_NO_BOTTLE_SOURCE_FALLBACK: 'ON'