diff --git a/META.json b/META.json
index 4647b414982a..0291a10db32e 100644
--- a/META.json
+++ b/META.json
@@ -55,6 +55,40 @@
          "dist/Time-HiRes",
          "dist/Unicode-Normalize",
          "dist/XSLoader",
+         "ext/B/t",
+         "ext/Devel-Peek/t",
+         "ext/DynaLoader/t",
+         "ext/Errno/t",
+         "ext/Fcntl/t",
+         "ext/File-DosGlob/t",
+         "ext/File-Find/t",
+         "ext/File-Glob/t",
+         "ext/FileCache/t",
+         "ext/GDBM_File/t",
+         "ext/Hash-Util-FieldHash/t",
+         "ext/Hash-Util/t",
+         "ext/I18N-Langinfo/t",
+         "ext/IPC-Open3/t",
+         "ext/NDBM_File/t",
+         "ext/ODBM_File/t",
+         "ext/Opcode/t",
+         "ext/PerlIO-encoding/t",
+         "ext/PerlIO-scalar/t",
+         "ext/PerlIO-via/t",
+         "ext/Pod-Functions/t",
+         "ext/Pod-Html/t",
+         "ext/POSIX/t",
+         "ext/re/t",
+         "ext/SDBM_File/t",
+         "ext/Sys-Hostname/t",
+         "ext/Tie-Hash-NamedCapture/t",
+         "ext/Tie-Memoize/t",
+         "ext/VMS-DCLsym/t",
+         "ext/VMS-Filespec/t",
+         "ext/VMS-Stdio/t",
+         "ext/Win32CORE/t",
+         "ext/XS-APItest/t",
+         "ext/XS-Typemap/t",
          "lib/perl5db",
          "win32"
       ],
diff --git a/META.yml b/META.yml
index 241576c5332c..934bc40f6090 100644
--- a/META.yml
+++ b/META.yml
@@ -53,6 +53,40 @@ no_index:
     - dist/Time-HiRes
     - dist/Unicode-Normalize
     - dist/XSLoader
+    - ext/B/t
+    - ext/Devel-Peek/t
+    - ext/DynaLoader/t
+    - ext/Errno/t
+    - ext/Fcntl/t
+    - ext/File-DosGlob/t
+    - ext/File-Find/t
+    - ext/File-Glob/t
+    - ext/FileCache/t
+    - ext/GDBM_File/t
+    - ext/Hash-Util-FieldHash/t
+    - ext/Hash-Util/t
+    - ext/I18N-Langinfo/t
+    - ext/IPC-Open3/t
+    - ext/NDBM_File/t
+    - ext/ODBM_File/t
+    - ext/Opcode/t
+    - ext/PerlIO-encoding/t
+    - ext/PerlIO-scalar/t
+    - ext/PerlIO-via/t
+    - ext/Pod-Functions/t
+    - ext/Pod-Html/t
+    - ext/POSIX/t
+    - ext/re/t
+    - ext/SDBM_File/t
+    - ext/Sys-Hostname/t
+    - ext/Tie-Hash-NamedCapture/t
+    - ext/Tie-Memoize/t
+    - ext/VMS-DCLsym/t
+    - ext/VMS-Filespec/t
+    - ext/VMS-Stdio/t
+    - ext/Win32CORE/t
+    - ext/XS-APItest/t
+    - ext/XS-Typemap/t
     - lib/perl5db
     - win32
   file:
diff --git a/Porting/makemeta b/Porting/makemeta
index 760377e060ef..8ca0822041bd 100644
--- a/Porting/makemeta
+++ b/Porting/makemeta
@@ -62,6 +62,7 @@ my $distmeta = {
 use lib "Porting";
 use File::Basename qw( dirname );
 use CPAN::Meta;
+use File::Spec;
 
 BEGIN {
     # Get function prototypes
@@ -74,7 +75,10 @@ my @CPAN  = grep { $Modules{$_}{CPAN} } keys %Modules;
 my @files = ('autodoc.pl', 'lib/unicore/mktables', 'TestInit.pm',
              'Porting/Maintainers.pm', 'Porting/perldelta_template.pod',
              map { get_module_files($_) } @CPAN);
-my @dirs  = ('cpan', 'win32', 'lib/perl5db', grep { -d $_ && $_  !~ /^cpan/ } map { get_module_pat($_) } @CPAN);
+my @extt = map { my $t = File::Spec->catdir($_, "t");
+                 -d $t ? ( $_ . "t" ) : () }
+  grep { /^ext\b/ } split ' ', $Modules{_PERLLIB}{FILES};
+my @dirs  = ('cpan', 'win32', 'lib/perl5db', @extt, grep { -d $_ && $_  !~ /^cpan/ } map { get_module_pat($_) } @CPAN);
 
 my %dirs;
 @dirs{@dirs} = ();