diff --git a/.gitignore b/.gitignore
index a289e51..ff31b73 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@
 /ast-8.2.0.tar.gz
 /ast-8.3.0.tar.gz
 /ast-8.4.0.tar.gz
+/ast-8.6.3.tar.gz
diff --git a/ast-bundled.patch b/ast-bundled.patch
index c421132..47334dc 100644
--- a/ast-bundled.patch
+++ b/ast-bundled.patch
@@ -1,7 +1,7 @@
-diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
---- ast-8.3.0/Makefile.in.bundled	2016-10-28 09:32:48.220169111 -0600
-+++ ast-8.3.0/Makefile.in	2016-10-28 09:33:31.780826041 -0600
-@@ -194,10 +194,8 @@ am__libast_la_SOURCES_DIST = axis.c box.
+diff -up ast-8.6.3/Makefile.in.bundled ast-8.6.3/Makefile.in
+--- ast-8.6.3/Makefile.in.bundled	2018-09-27 20:24:50.680043595 -0600
++++ ast-8.6.3/Makefile.in	2018-09-27 20:26:41.328552643 -0600
+@@ -190,10 +190,7 @@ am__libast_la_SOURCES_DIST = axis.c box.
  	stccatalogentrylocation.h stcobsdatalocation.h timeframe.h \
  	channel.h fitschan.h stcschan.h xmlchan.h ems.h err.h Ers.h \
  	f77.h grf.h grf3d.h pg3d.h loader.h pal2ast.h erfa2ast.h \
@@ -9,12 +9,11 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
 -	cminpack/cminpackP.h cminpack/lmder1.c cminpack/lmder.c \
 -	cminpack/dpmpar.c cminpack/enorm.c cminpack/qrfac.c \
 -	cminpack/lmpar.c cminpack/qrsolv.c proj.c tpn.c wcstrig.c
-+	wcsmath.h c2f77.h GRF_PAR AST_ERR \
-+	proj.c tpn.c wcstrig.c
++	wcsmath.h c2f77.h GRF_PAR AST_ERR proj.c tpn.c wcstrig.c
  am__objects_1 = libast_la-axis.lo libast_la-box.lo \
- 	libast_la-channel.lo libast_la-circle.lo libast_la-cmpframe.lo \
- 	libast_la-cmpmap.lo libast_la-cmpregion.lo \
-@@ -268,10 +266,7 @@ am__objects_1 = libast_la-axis.lo libast
+ 	libast_la-channel.lo libast_la-chebymap.lo libast_la-circle.lo \
+ 	libast_la-cmpframe.lo libast_la-cmpmap.lo \
+@@ -265,10 +262,7 @@ am__objects_1 = libast_la-axis.lo libast
  am__objects_3 =
  am__objects_4 = $(am__objects_3)
  am__dirstamp = $(am__leading_dot)dirstamp
@@ -26,7 +25,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  am__objects_6 = libast_la-proj.lo libast_la-tpn.lo \
  	libast_la-wcstrig.lo
  am_libast_la_OBJECTS = $(am__objects_1) $(am__objects_2) \
-@@ -1362,17 +1357,6 @@ PAL_FILES = \
+@@ -1378,17 +1372,6 @@ PAL_FILES = \
      erfa.h \
      erfam.h
  
@@ -44,7 +43,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  bin_SCRIPTS = ast_link
  dist_bin_SCRIPTS = ast_link_adam
  noinst_SCRIPTS = ast_cpp
-@@ -1439,13 +1423,13 @@ libast_la_SOURCES = \
+@@ -1455,13 +1438,13 @@ libast_la_SOURCES = \
      $(WCSLIB_FILES) \
      ast_err.h
  
@@ -60,7 +59,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  # AST_PAR is really part of GRP_F_INCLUDE_FILES, but it must not be
  # distributed, so list it separately.
-@@ -1500,7 +1484,7 @@ astbad_SOURCES = astbad.c pointset.h
+@@ -1516,7 +1499,7 @@ astbad_SOURCES = astbad.c pointset.h
  # configure.ac, and so is not distributed automatically.
  #
  # makeh is required in order to build ast.h after distribution (see below).
@@ -69,7 +68,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  # AST_ERR and ast_err.h are `generated source files', and so must be
  # generated before any other compilations are done.  Note that these
-@@ -1653,26 +1637,6 @@ clean-libLTLIBRARIES:
+@@ -1668,26 +1651,6 @@ clean-libLTLIBRARIES:
  	  echo rm -f $${locs}; \
  	  rm -f $${locs}; \
  	}
@@ -96,7 +95,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  libast.la: $(libast_la_OBJECTS) $(libast_la_DEPENDENCIES) 
  	$(AM_V_CCLD)$(libast_la_LINK) -rpath $(libdir) $(libast_la_LDFLAGS) $(libast_la_OBJECTS) $(libast_la_LIBADD)  $(LIBS)
  libast_drama.la: $(libast_drama_la_OBJECTS) $(libast_drama_la_DEPENDENCIES) 
-@@ -1800,8 +1764,6 @@ uninstall-dist_binSCRIPTS:
+@@ -1815,8 +1778,6 @@ uninstall-dist_binSCRIPTS:
  
  mostlyclean-compile:
  	-rm -f *.$(OBJEXT)
@@ -105,7 +104,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  distclean-compile:
  	-rm -f *.tab.c
-@@ -1954,13 +1916,6 @@ distclean-compile:
+@@ -1971,13 +1932,6 @@ distclean-compile:
  @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libast_pgplot3d_la-grf3d_pgplot.Plo@am__quote@
  @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libast_pgplot_la-grf_5.6.Plo@am__quote@
  @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libast_pgplot_la-grf_pgplot.Plo@am__quote@
@@ -119,7 +118,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  .c.o:
  @am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
-@@ -3062,7 +3017,6 @@ mostlyclean-libtool:
+@@ -3093,7 +3047,6 @@ mostlyclean-libtool:
  
  clean-libtool:
  	-rm -rf .libs _libs
@@ -127,7 +126,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  distclean-libtool:
  	-rm -f libtool config.lt
-@@ -3774,8 +3728,6 @@ clean-generic:
+@@ -3805,8 +3758,6 @@ clean-generic:
  distclean-generic:
  	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
  	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
@@ -136,7 +135,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  
  maintainer-clean-generic:
  	@echo "This command is intended for maintainers to use"
-@@ -3795,7 +3747,6 @@ clean-am: clean-checkPROGRAMS clean-gene
+@@ -3826,7 +3777,6 @@ clean-am: clean-checkPROGRAMS clean-gene
  
  distclean: distclean-am
  	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
@@ -144,7 +143,7 @@ diff -up ast-8.3.0/Makefile.in.bundled ast-8.3.0/Makefile.in
  	-rm -f Makefile
  distclean-am: clean-am distclean-compile distclean-generic \
  	distclean-hdr distclean-libtool distclean-tags
-@@ -3848,7 +3799,6 @@ installcheck-am:
+@@ -3879,7 +3829,6 @@ installcheck-am:
  maintainer-clean: maintainer-clean-am
  	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
  	-rm -rf $(top_srcdir)/autom4te.cache
diff --git a/ast.spec b/ast.spec
index 3996534..37d84ab 100644
--- a/ast.spec
+++ b/ast.spec
@@ -1,8 +1,8 @@
 %{!?_pkgdocdir: %global _pkgdocdir %{_docdir}/%{name}-%{version}}
 
 Name:           ast
-Version:        8.4.0
-Release:        6%{?dist}
+Version:        8.6.3
+Release:        1%{?dist}
 Summary:        A Library for Handling World Coordinate Systems in Astronomy
 
 Group:          System Environment/Libraries
@@ -130,6 +130,9 @@ make check
 
 
 %changelog
+* Thu Sep 27 2018 Orion Poplawski <orion@cora.nwra.com> 8.6.3-1
+- Update to 8.6.3
+
 * Thu Jul 12 2018 Fedora Release Engineering <releng@fedoraproject.org> - 8.4.0-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild
 
diff --git a/sources b/sources
index ba8a7b7..f8cde39 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ast-8.4.0.tar.gz) = 839514f05b1f9e69d3d056c9378a523a8353e783fb8e845af3a0846d91fc55927e318b37c567f99b14a4e4b6f7f889fd997f58ee60c15ce30d9204ad193b5381
+SHA512 (ast-8.6.3.tar.gz) = f554f92ae33917ad42a60f005d9c62ecccbcfdc40c81b5a62fa01afc189de3b1ede6a32fe952d1bea924c8d5ba25b21f7dc1a4f2fd47337182641754cfe5ab94