diff --git a/examples/petsc/include/petscutils.h b/examples/petsc/include/petscutils.h
index 28d9ffdbc2..b1b07f7672 100644
--- a/examples/petsc/include/petscutils.h
+++ b/examples/petsc/include/petscutils.h
@@ -13,9 +13,6 @@
 #include <petsc.h>
 
 #include "structs.h"
-#if PETSC_VERSION_LT(3, 21, 0)
-#define DMSetCoordinateDisc(a, b, c) DMProjectCoordinates(a, b)
-#endif
 
 CeedMemType      MemTypeP2C(PetscMemType mtype);
 PetscErrorCode   VecP2C(Vec X_petsc, PetscMemType *mem_type, CeedVector x_ceed);
diff --git a/examples/petsc/include/petscversion.h b/examples/petsc/include/petscversion.h
index c74e2f2d4b..8c1d3f92be 100644
--- a/examples/petsc/include/petscversion.h
+++ b/examples/petsc/include/petscversion.h
@@ -9,6 +9,6 @@
 /// Petsc version check
 #pragma once
 
-#if PETSC_VERSION_LT(3, 20, 0)
-#error "PETSc v3.20 or later is required"
+#if PETSC_VERSION_LT(3, 21, 0)
+#error "PETSc v3.21 or later is required"
 #endif
diff --git a/examples/solids/elasticity.h b/examples/solids/elasticity.h
index 74442e0ac9..7ac246eccc 100644
--- a/examples/solids/elasticity.h
+++ b/examples/solids/elasticity.h
@@ -21,10 +21,6 @@
 #include "include/utils.h"
 #include "problems/problems.h"
 
-#if PETSC_VERSION_LT(3, 20, 0)
-#error "PETSc v3.20 or later is required"
-#endif
-
 #if PETSC_VERSION_LT(3, 21, 0)
-#define DMSetCoordinateDisc(a, b, c) DMProjectCoordinates(a, b)
+#error "PETSc v3.21 or later is required"
 #endif