diff --git a/packages/numlib/petsc/3.4.0 b/packages/numlib/petsc/3.4.0
index 0961673..ed499f2 100755
--- a/packages/numlib/petsc/3.4.0
+++ b/packages/numlib/petsc/3.4.0
@@ -7,7 +7,7 @@
 # PREFIX_BASE=/opt COMPILER=intel COMPILER_VERSION=13.1.2 MPI=impi MPI_VERSION=4.1.1.036 ./sit numlib/petsc/petsc-3.4.0
 #
 # sit command for gnu:
-# PREFIX_BASE=/opt COMPILER=gnu COMPILER_VERSION=4.7.3 MPI=openmpi MPI_VERSION=1.6.4 ./sit numlib/petsc/3.4.0
+# PREFIX_BASE=/opt COMPILER=gnu COMPILER_VERSION=4.7.3 MPI=openmpi MPI_VERSION=1.6.5 ./sit numlib/petsc/3.4.0
 
 CATEGORY="numlib"
 PACKAGE="petsc"