diff --git a/CMakeLists.txt b/CMakeLists.txt
index de04a95e3..60a05cfc7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ endif()
 project(Prerequisites LANGUAGES)
 set(ENV{PKG_CONFIG_PATH} "$ENV{PETSC_DIR}/$ENV{PETSC_ARCH}/lib/pkgconfig:$ENV{PKG_CONFIG_PATH}")
 pkg_check_modules(PETSC_MIN REQUIRED PETSc>=3.12.0 QUIET) #CMake does not support version range
-pkg_check_modules(PETSC REQUIRED PETSc<3.20.0)
+pkg_check_modules(PETSC REQUIRED PETSc<3.21.0)
 
 pkg_get_variable(CMAKE_Fortran_COMPILER PETSc fcompiler)
 pkg_get_variable(CMAKE_C_COMPILER PETSc ccompiler)
diff --git a/src/CLI.f90 b/src/CLI.f90
index 675f3c3bc..968186f3d 100644
--- a/src/CLI.f90
+++ b/src/CLI.f90
@@ -6,7 +6,7 @@
 !> @brief Parse command line interface for PETSc-based solvers
 !--------------------------------------------------------------------------------------------------
 #define PETSC_MINOR_MIN 12
-#define PETSC_MINOR_MAX 19
+#define PETSC_MINOR_MAX 20
 
 module CLI
   use, intrinsic :: ISO_fortran_env
diff --git a/src/mesh/mesh_mech_FEM.f90 b/src/mesh/mesh_mech_FEM.f90
index c566990e2..67b7859ba 100644
--- a/src/mesh/mesh_mech_FEM.f90
+++ b/src/mesh/mesh_mech_FEM.f90
@@ -74,6 +74,9 @@ module mesh_mechanical_FEM
   external :: &                                                                                     ! ToDo: write interfaces
 #if defined(PETSC_USE_64BIT_INDICES) || PETSC_VERSION_MINOR < 17
     ISDestroy, &
+#endif
+#if PETSC_VERSION_MINOR > 18
+    DMAddField, &
 #endif
     PetscSectionGetNumFields, &
     PetscFESetQuadrature, &