diff --git a/sources b/sources
index 1b8fdd6..64d114b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (tcl-core8.6.12-src.tar.gz) = 7144a50d19d3855edbda14b538cc94fe26c0dd357b979676c3fe02d599dab61ba777bf14f6aaebb63e238aeff1d0bad25ea7b0ff31b2398468f67fc0a305b9f3
+SHA512 (tcl-core8.6.13-src.tar.gz) = c1c953ac0f9a530d8256514c0cb78f166d0063db725b87fa19272716a955cd390ff8f1c5f17e791cf463284d88bb136d61194779a913a6a78f46146d485c71ee
diff --git a/tcl-configure-c99.patch b/tcl-8.6.13-configure-c99.patch
similarity index 58%
rename from tcl-configure-c99.patch
rename to tcl-8.6.13-configure-c99.patch
index bcb9f19..52af4a0 100644
--- a/tcl-configure-c99.patch
+++ b/tcl-8.6.13-configure-c99.patch
@@ -1,15 +1,9 @@
-Avoid calling the exit function without declaring it first.
-
-Submitted upstream here:
-
-https://core.tcl-lang.org/tcl/tktview/d550f4837a078ff3054d3b00a156d8a11fb628cf
-
 diff --git a/unix/tcl.m4 b/unix/tcl.m4
-index ed12cda75bbc4ad9..d77184421bf8df16 100644
+index 9f15d52..7fad3a8 100644
 --- a/unix/tcl.m4
 +++ b/unix/tcl.m4
-@@ -2352,7 +2352,7 @@ AC_DEFUN([SC_TIME_HANDLER], [
- 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]],
+@@ -2366,7 +2366,7 @@ AC_DEFUN([SC_TIME_HANDLER], [
+ #include <stdlib.h>]],
  	[[extern long timezone;
  	    timezone += 1;
 -	    exit (0);]])],
@@ -17,8 +11,8 @@ index ed12cda75bbc4ad9..d77184421bf8df16 100644
  	    [tcl_cv_timezone_long=yes], [tcl_cv_timezone_long=no])])
      if test $tcl_cv_timezone_long = yes ; then
  	AC_DEFINE(HAVE_TIMEZONE_VAR, 1, [Should we use the global timezone variable?])
-@@ -2364,7 +2364,7 @@ AC_DEFUN([SC_TIME_HANDLER], [
- 	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]],
+@@ -2379,7 +2379,7 @@ AC_DEFUN([SC_TIME_HANDLER], [
+ #include <stdlib.h>]],
  	    [[extern time_t timezone;
  		timezone += 1;
 -		exit (0);]])],
diff --git a/tcl-8.6.12-hidden.patch b/tcl-8.6.13-hidden.patch
similarity index 87%
rename from tcl-8.6.12-hidden.patch
rename to tcl-8.6.13-hidden.patch
index 39304ec..b1af98a 100644
--- a/tcl-8.6.12-hidden.patch
+++ b/tcl-8.6.13-hidden.patch
@@ -1,8 +1,8 @@
 diff --git a/generic/tclInt.h b/generic/tclInt.h
-index 949672b..5f3d493 100644
+index 8c3efb5..f8dd3af 100644
 --- a/generic/tclInt.h
 +++ b/generic/tclInt.h
-@@ -3309,7 +3309,7 @@ MODULE_SCOPE void	TclClockInit(Tcl_Interp *interp);
+@@ -3311,7 +3311,7 @@ MODULE_SCOPE void	TclClockInit(Tcl_Interp *interp);
  MODULE_SCOPE int	TclClockOldscanObjCmd(
  			    ClientData clientData, Tcl_Interp *interp,
  			    int objc, Tcl_Obj *const objv[]);
@@ -11,7 +11,7 @@ index 949672b..5f3d493 100644
  			    Tcl_Interp *interp, int objc,
  			    Tcl_Obj *const objv[]);
  MODULE_SCOPE int	Tcl_ConcatObjCmd(ClientData clientData,
-@@ -3490,7 +3490,7 @@ MODULE_SCOPE int	Tcl_RenameObjCmd(ClientData clientData,
+@@ -3492,7 +3492,7 @@ MODULE_SCOPE int	Tcl_RenameObjCmd(ClientData clientData,
  MODULE_SCOPE int	Tcl_RepresentationCmd(ClientData clientData,
  			    Tcl_Interp *interp, int objc,
  			    Tcl_Obj *const objv[]);
diff --git a/tcl-8.6.10-tcltests-path-fix.patch b/tcl-8.6.13-tcltests-path-fix.patch
similarity index 88%
rename from tcl-8.6.10-tcltests-path-fix.patch
rename to tcl-8.6.13-tcltests-path-fix.patch
index 62c55e9..229a410 100644
--- a/tcl-8.6.10-tcltests-path-fix.patch
+++ b/tcl-8.6.13-tcltests-path-fix.patch
@@ -1,8 +1,8 @@
 diff --git a/unix/Makefile.in b/unix/Makefile.in
-index 99bdf05..0b2f660 100644
+index 0a99998..f016e66 100644
 --- a/unix/Makefile.in
 +++ b/unix/Makefile.in
-@@ -788,7 +788,7 @@ topDirName:
+@@ -792,7 +792,7 @@ topDirName:
  # This keeps tcltest from picking up an already installed version of the Tcl
  # library.
  SHELL_ENV =	@LD_LIBRARY_PATH_VAR@=`pwd`:${@LD_LIBRARY_PATH_VAR@} \
diff --git a/tcl.spec b/tcl.spec
index 103c650..c9cf7c3 100644
--- a/tcl.spec
+++ b/tcl.spec
@@ -1,11 +1,11 @@
 %define majorver 8.6
-%define	vers %{majorver}.12
+%define	vers %{majorver}.13
 %{!?sdt:%define sdt 1}
 
 Summary: Tool Command Language, pronounced tickle
 Name: tcl
 Version: %{vers}
-Release: 6%{?dist}
+Release: 1%{?dist}
 Epoch: 1
 License: TCL AND GPL-3.0-or-later WITH bison-exception-2.2 AND BSD-3-Clause
 URL: http://tcl.sourceforge.net/
@@ -19,9 +19,9 @@ Obsoletes: tcl-tcldict <= %{vers}
 Provides: tcl-tcldict = %{vers}
 Patch0: tcl-8.6.12-autopath.patch
 Patch1: tcl-8.6.12-conf.patch
-Patch2: tcl-8.6.12-hidden.patch
-Patch3: tcl-8.6.10-tcltests-path-fix.patch
-Patch4: tcl-configure-c99.patch
+Patch2: tcl-8.6.13-hidden.patch
+Patch3: tcl-8.6.13-tcltests-path-fix.patch
+Patch4: tcl-8.6.13-configure-c99.patch
 
 %if %sdt
 BuildRequires: systemtap-sdt-devel
@@ -60,15 +60,8 @@ applications.
 The package contains the development files and man pages for tcl.
 
 %prep
-%setup -q -n %{name}%{version}
+%autosetup -p1 -n %{name}%{version}
 rm -r compat/zlib
-chmod -x generic/tclStrToD.c
-
-%patch0 -p1 -b .autopath
-%patch1 -p1 -b .conf
-%patch2 -p1 -b .hidden
-%patch3 -p1 -b .tcltests-path-fix
-%patch4 -p1 -b .configure-c99
 
 %build
 pushd unix
@@ -146,6 +139,10 @@ rm -rf %{buildroot}/%{_datadir}/%{name}%{majorver}/ldAix
 %{_datadir}/%{name}%{majorver}/tclAppInit.c
 
 %changelog
+* Tue Aug 29 2023 Jaroslav Škarvada <jskarvad@redhat.com> - 1:8.6.13-1
+- New version
+  Resolves: rhbz#2231272
+
 * Thu Aug 10 2023 Jaroslav Škarvada <jskarvad@redhat.com> - 1:8.6.12-6
 - Converted license to SPDX