diff --git a/P/PETSc/build_tarballs.jl b/P/PETSc/build_tarballs.jl
index 334938eead8..3c83579ad3f 100644
--- a/P/PETSc/build_tarballs.jl
+++ b/P/PETSc/build_tarballs.jl
@@ -1,13 +1,13 @@
 using BinaryBuilder
 
 name = "PETSc"
-version = v"3.15.2"
+version = v"3.16.5"
 
 # Collection of sources required to build PETSc. Avoid using the git repository, it will
 # require building SOWING which fails in all non-linux platforms.
 sources = [
-    ArchiveSource("https://www.mcs.anl.gov/petsc/mirror/release-snapshots/petsc-3.15.2.tar.gz",
-    "3b10c19c69fc42e01a38132668724a01f1da56f5c353105cd28f1120cc9041d8"),
+    ArchiveSource("https://www.mcs.anl.gov/petsc/mirror/release-snapshots/petsc-$(version).tar.gz",
+    "7de8570eeb94062752d82a83208fc2bafc77b3f515023a4c14d8ff9440e66cac"),
     DirectorySource("./bundled"),
 ]
 
@@ -24,7 +24,7 @@ if [[ "${target}" == *-mingw* ]]; then
 else
     MPI_LIBS="[${libdir}/libmpifort.${dlext},${libdir}/libmpi.${dlext}]"
 fi
-
+mkdir $libdir/petsc
 build_petsc()
 {
 
@@ -33,19 +33,19 @@ build_petsc()
     else
         USE_INT64=0
     fi
-
-    ./configure --prefix=${prefix} \
+    mkdir $libdir/petsc/${1}_${2}_${3}
+    ./configure --prefix=${libdir}/petsc/${1}_${2}_${3} \
         CC=${CC} \
         FC=${FC} \
         CXX=${CXX} \
         COPTFLAGS='-O3' \
         CXXOPTFLAGS='-O3' \
         CFLAGS='-fno-stack-protector' \
+        LDFLAGS="-L${libdir}" \
         FOPTFLAGS='-O3' \
         --with-64-bit-indices=${USE_INT64} \
         --with-debugging=0 \
         --with-batch \
-        --PETSC_ARCH=${target}_${1}_${2}_${3} \
         --with-blaslapack-lib=$BLAS_LAPACK_LIB \
         --with-blaslapack-suffix="" \
         --known-64-bit-blas-indices=0 \
@@ -54,7 +54,8 @@ build_petsc()
         --with-mpi-include="${includedir}" \
         --with-sowing=0 \
         --with-precision=${1} \
-        --with-scalar-type=${2}
+        --with-scalar-type=${2} \
+        --PETSC_ARCH=${target}_${1}_${2}_${3}
 
     if [[ "${target}" == *-mingw* ]]; then
         export CPPFLAGS="-Dpetsc_EXPORTS"
@@ -64,29 +65,19 @@ build_petsc()
     fi
 
     make -j${nproc} \
-        PETSC_DIR="${PWD}" \
-        PETSC_ARCH="${target}_${1}_${2}_${3}" \
         CPPFLAGS="${CPPFLAGS}" \
         CFLAGS="${CFLAGS}" \
-        FFLAGS="${FFLAGS}" \
-        DEST_DIR="${prefix}" \
-        all
-
-    make PETSC_DIR=$PWD PETSC_ARCH=${target}_${1}_${2}_${3} DEST_DIR=$prefix install
+        FFLAGS="${FFLAGS}"
+    make install
 
-    # add suffix to library name
-    if [[ "${target}" == *-mingw* ]]; then
-        # changing the extension from so to dll.
-        mv ${prefix}/lib/libpetsc.so.*.*.* "${libdir}/libpetsc_${1}_${2}_${3}.${dlext}"
-    elif [[ "${target}" == *-apple* ]]; then
-        mv ${prefix}/lib/libpetsc.*.*.*.${dlext} "${libdir}/libpetsc_${1}_${2}_${3}.${dlext}"
+    if [[ "${target}" == *-apple* ]]; then
+        mv ${libdir}/petsc/${1}_${2}_${3}/lib/libpetsc.*.*.*.${dlext} "${libdir}/petsc/${1}_${2}_${3}/lib/libpetsc_${1}_${2}_${3}.${dlext}"
     else
-        mv ${prefix}/lib/libpetsc.${dlext}.*.*.* "${libdir}/libpetsc_${1}_${2}_${3}.${dlext}"
+        mv ${libdir}/petsc/${1}_${2}_${3}/lib/libpetsc.${dlext}.*.*.* "${libdir}/petsc/${1}_${2}_${3}/lib/libpetsc_${1}_${2}_${3}.${dlext}"
     fi
-    # Remove useless links
-    rm ${prefix}/lib/libpetsc.*
-    # Remove duplicated file
-    rm ${prefix}/lib/pkgconfig/PETSc.pc
+
+    # Remove now broken(?) links
+    rm ${libdir}/petsc/${1}_${2}_${3}/lib/libpetsc.*
 }
 
 build_petsc double real Int32
@@ -103,23 +94,24 @@ build_petsc single complex Int64
 platforms = expand_gfortran_versions(supported_platforms(exclude=[Platform("i686", "windows")]))
 
 products = [
-    LibraryProduct("libpetsc_double_real_Int32", :libpetsc), # Current default build
-    LibraryProduct("libpetsc_double_real_Int64", :libpetsc_Float64_Real_Int64),
-    LibraryProduct("libpetsc_single_real_Int64", :libpetsc_Float32_Real_Int64),
-    LibraryProduct("libpetsc_double_complex_Int64", :libpetsc_Float64_Complex_Int64),
-    LibraryProduct("libpetsc_single_complex_Int64", :libpetsc_Float32_Complex_Int64),
-    LibraryProduct("libpetsc_double_real_Int32", :libpetsc_Float64_Real_Int32),
-    LibraryProduct("libpetsc_single_real_Int32", :libpetsc_Float32_Real_Int32),
-    LibraryProduct("libpetsc_double_complex_Int32", :libpetsc_Float64_Complex_Int32),
-    LibraryProduct("libpetsc_single_complex_Int32", :libpetsc_Float32_Complex_Int32),
+    # Current default build, equivalent to Float64_Real_Int32
+    LibraryProduct("libpetsc_double_real_Int32", :libpetsc, "\$libdir/petsc/double_real_Int32/lib")
+    LibraryProduct("libpetsc_double_real_Int32", :libpetsc_Float64_Real_Int32, "\$libdir/petsc/double_real_Int32/lib")
+    LibraryProduct("libpetsc_double_real_Int64", :libpetsc_Float64_Real_Int64, "\$libdir/petsc/double_real_Int64/lib")
+    LibraryProduct("libpetsc_single_real_Int64", :libpetsc_Float32_Real_Int64, "\$libdir/petsc/single_real_Int64/lib")
+    LibraryProduct("libpetsc_double_complex_Int64", :libpetsc_Float64_Complex_Int64, "\$libdir/petsc/double_complex_Int64/lib")
+    LibraryProduct("libpetsc_single_complex_Int64", :libpetsc_Float32_Complex_Int64, "\$libdir/petsc/single_complex_Int64/lib")
+    LibraryProduct("libpetsc_single_real_Int32", :libpetsc_Float32_Real_Int32, "\$libdir/petsc/single_real_Int32/lib")
+    LibraryProduct("libpetsc_double_complex_Int32", :libpetsc_Float64_Complex_Int32, "\$libdir/petsc/double_complex_Int32/lib")
+    LibraryProduct("libpetsc_single_complex_Int32", :libpetsc_Float32_Complex_Int32, "\$libdir/petsc/single_complex_Int32/lib")
 ]
 
 dependencies = [
     Dependency("OpenBLAS32_jll"),
-    Dependency("MPICH_jll"),
-    Dependency("MicrosoftMPI_jll"),
+    Dependency("MPICH_jll"; platforms=filter(!Sys.iswindows, platforms)),
+    Dependency("MicrosoftMPI_jll"; platforms=filter(Sys.iswindows, platforms)),
     Dependency("CompilerSupportLibraries_jll"),
 ]
 
 # Build the tarballs.
-build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies; preferred_gcc_version = v"9")
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies; julia_compat="1.6", preferred_gcc_version = v"9")