diff --git a/sysa/SHA256SUMS.pkgs b/sysa/SHA256SUMS.pkgs
index 9331109..c5309dd 100644
--- a/sysa/SHA256SUMS.pkgs
+++ b/sysa/SHA256SUMS.pkgs
@@ -97,7 +97,7 @@ b86fc586d72a6d204d0b9017afe17aa2439529e13f43befc56648b78de17c8f8  perl5.004-05_0
 f0c7bb60faae8eaf6960dfaad43acc7e30d5487ae114e44ec3c184c946adbc6f  python-2.0.1_1.tar.bz2
 5163e798e204b0e4ea1ab5d513ad618e11fb6dd01414991f7c7408dc74d54400  python-2.3.7_0.tar.bz2
 ce21de104f50a65012f42df46b53beaf1dc2d8c5bf8f09ad20f80f64a2eb4d68  python-2.3.7_1.tar.bz2
-0ced0d04ab4774dcf99eebfe3271a1b368c9a35f4f1467bf43fd000fbb32be16  python-2.5.6_0.tar.bz2
+2788ab6ae1c411898de035aadfdbed9b77812c73d9c68a79813390d6f1e3f87f  python-2.5.6_0.tar.bz2
 eba41b855f378e004648b1b3453485d2d4401cd72cf7b993c1be06b7cebf71a2  python-3.1.5_0.tar.bz2
 e10a0eceb1fcb9ca80dfcaf53bfa0d311adbaccdaf6846a6c5abfbea1e7db879  python-3.1.5_1.tar.bz2
 bc87d4b8b0d2f26ed7d632c73ef9cd937bc9b6cb3bdcb57fdea78d29e38722bc  python-3.11.1_0.tar.bz2
diff --git a/sysc/python-2.5.6/patches/pgen-timestamp.patch b/sysc/python-2.5.6/patches/pgen-timestamp.patch
new file mode 100644
index 0000000..7a44dac
--- /dev/null
+++ b/sysc/python-2.5.6/patches/pgen-timestamp.patch
@@ -0,0 +1,36 @@
+SPDX-FileCopyrightText: 2011 Antoine Pitrou <solipsis@pitrou.net>
+
+SPDX-License-Identifier: PSF-2.0
+
+Don't run pgen twice when using make -j
+Don't ignore pgen error (on "make Parser/pgen.stamp")
+
+diff --git a/Makefile.pre.in b/Makefile.pre.in
+index 25a82aff01..03f85fd04b 100644
+--- Makefile.pre.in
++++ Makefile.pre.in
+@@ -471,10 +471,12 @@ Modules/getpath.o: $(srcdir)/Modules/getpath.c Makefile
+ Modules/python.o: $(srcdir)/Modules/python.c
+ 	$(MAINCC) -c $(PY_CFLAGS) -o $@ $(srcdir)/Modules/python.c
+ 
+-
+-$(GRAMMAR_H) $(GRAMMAR_C): $(PGEN) $(GRAMMAR_INPUT)
++# Use a stamp file to prevent make -j invoking pgen twice
++$(GRAMMAR_H) $(GRAMMAR_C): Parser/pgen.stamp
++Parser/pgen.stamp: $(PGEN) $(GRAMMAR_INPUT)
+ 		-@ mkdir Include
+-		-$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
++		$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
++		-touch Parser/pgen.stamp
+ 
+ $(PGEN):	$(PGENOBJS)
+ 		$(CC) $(OPT) $(LDFLAGS) $(PGENOBJS) $(LIBS) -o $(PGEN)
+@@ -1030,7 +1032,7 @@ clean: pycremoval
+ 
+ clobber: clean
+ 	-rm -f $(BUILDPYTHON) $(PGEN) $(LIBRARY) $(LDLIBRARY) $(DLLLIBRARY) \
+-		tags TAGS \
++		tags TAGS Parser/pgen.stamp \
+ 		config.cache config.log pyconfig.h Modules/config.c
+ 	-rm -rf build platform
+ 	-rm -rf $(PYTHONFRAMEWORKDIR)