diff --git a/.gitignore b/.gitignore
index 74d9125..5ac8731 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /fltk-1.3.4-1-source.tar.gz
 /fltk-1.3.5-source.tar.gz
+/fltk-1.3.6-source.tar.gz
diff --git a/fltk-1.3.4-fltk_config.patch b/fltk-1.3.4-fltk_config.patch
index 5f33a0f..f1764c7 100644
--- a/fltk-1.3.4-fltk_config.patch
+++ b/fltk-1.3.4-fltk_config.patch
@@ -1,7 +1,8 @@
-diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in
---- fltk-1.3.4-1/fltk-config.in.fltk_config	2016-01-30 20:49:56.000000000 -0600
-+++ fltk-1.3.4-1/fltk-config.in	2017-03-04 12:29:28.910316677 -0600
-@@ -44,8 +44,8 @@ CXX="@CXX@"
+Index: fltk-1.3.6/fltk-config.in
+===================================================================
+--- fltk-1.3.6.orig/fltk-config.in
++++ fltk-1.3.6/fltk-config.in
+@@ -42,8 +42,8 @@ CXX="@CXX@"
  
  # flags for C++ compiler:
  ARCHFLAGS="@ARCHFLAGS@"
@@ -12,7 +13,7 @@ diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in
  LDFLAGS="@LDFLAGS@"
  LDLIBS="@LIBS@"
  OPTIM="@OPTIM@"
-@@ -228,7 +228,7 @@ if test "$BINARY_DIR" != ""; then
+@@ -226,7 +226,7 @@ if test "$BINARY_DIR" != ""; then
      includes="-I$BINARY_DIR $includes"
  fi
  
@@ -21,7 +22,7 @@ diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in
      libs=-L$libdir
  else
      libs=
-@@ -236,28 +236,28 @@ fi
+@@ -234,23 +234,23 @@ fi
  
  # Calculate needed libraries
  LDSTATIC="$libdir/libfltk.a $LDLIBS"
@@ -33,9 +34,9 @@ diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in
      LDSTATIC="$libdir/libfltk_forms.a $LDSTATIC"
  fi
  if test x$use_gl = xyes; then
--    LDLIBS="-lfltk_gl$SHAREDSUFFIX @GLLIB@ $LDLIBS"
+-    LDLIBS="-lfltk_gl$SHAREDSUFFIX @GLLIBS@ $LDLIBS"
 +    LDLIBS="-lfltk_gl$SHAREDSUFFIX $LDLIBS"
-     LDSTATIC="$libdir/libfltk_gl.a @GLLIB@ $LDSTATIC"
+     LDSTATIC="$libdir/libfltk_gl.a @GLLIBS@ $LDSTATIC"
  fi
  if test x$use_images = xyes; then
 -    LDLIBS="-lfltk_images$SHAREDSUFFIX $IMAGELIBS $LDLIBS"
@@ -49,10 +50,3 @@ diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in
      LDSTATIC="$libdir/libfltk_cairo.a $CAIROLIBS $LDSTATIC"
  fi
  
--LDLIBS="$DSOLINK $LDFLAGS $libs $LDLIBS"
--LDSTATIC="$LDFLAGS $LDSTATIC"
-+LDLIBS="$libs $LDLIBS"
-+#LDSTATIC="$LDFLAGS $LDSTATIC"
- 
- # Answer to user requests
- if test -n "$echo_help"; then
diff --git a/fltk-cmake.patch b/fltk-cmake.patch
index a9505aa..4813f9b 100644
--- a/fltk-cmake.patch
+++ b/fltk-cmake.patch
@@ -1,26 +1,13 @@
-Index: fltk-1.3.5/CMake/macros.cmake
+Index: fltk-1.3.6/CMake/setup.cmake
 ===================================================================
---- fltk-1.3.5.orig/CMake/macros.cmake
-+++ fltk-1.3.5/CMake/macros.cmake
-@@ -38,7 +38,7 @@ macro(FL_ADD_LIBRARY LIBNAME LIBTYPE LIB
- 
-     set_target_properties(${LIBRARY_NAME}
-         PROPERTIES
--        OUTPUT_NAME ${LIBRARY_NAME}
-+        OUTPUT_NAME ${LIBNAME}
-         DEBUG_OUTPUT_NAME ${LIBRARY_NAME_DEBUG}
-         CLEAN_DIRECT_OUTPUT TRUE
-         COMPILE_DEFINITIONS "FL_LIBRARY"
-Index: fltk-1.3.5/CMake/setup.cmake
-===================================================================
---- fltk-1.3.5.orig/CMake/setup.cmake
-+++ fltk-1.3.5/CMake/setup.cmake
-@@ -85,7 +85,7 @@ if(WIN32 AND NOT CYGWIN)
- elseif(APPLE AND NOT OPTION_APPLE_X11)
-    set(FLTK_CONFIG_PATH FLTK/.framework/Resources/CMake)
- else()
--   set(FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk)
-+   set(FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk CACHE FILEPATH "Install location for cmake files.")
- endif(WIN32 AND NOT CYGWIN)
+--- fltk-1.3.6.orig/CMake/setup.cmake
++++ fltk-1.3.6/CMake/setup.cmake
+@@ -62,7 +62,7 @@ if (WIN32 AND NOT CYGWIN)
+ elseif (APPLE AND NOT OPTION_APPLE_X11)
+   set (FLTK_CONFIG_PATH FLTK.framework/Resources/CMake)
+ else ()
+-  set (FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk)
++  set (FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk CACHE FILEPATH "Install location for cmake files.")
+ endif (WIN32 AND NOT CYGWIN)
  
  include(TestBigEndian)
diff --git a/fltk.spec b/fltk.spec
index c04850e..3d9e521 100644
--- a/fltk.spec
+++ b/fltk.spec
@@ -5,8 +5,8 @@
 
 Summary:	C++ user interface toolkit
 Name:		fltk
-Version:	1.3.5
-Release:	11%{?dist}
+Version:	1.3.6
+Release:	1%{?dist}
 
 # see COPYING (or http://www.fltk.org/COPYING.php ) for exceptions details
 License:	LGPLv2+ with exceptions	
@@ -151,6 +151,9 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/fluid.desktop
 
 
 %changelog
+* Sun Jun 27 2021 Richard Shaw <hobbes1069@gmail.com> - 1.3.6-1
+- Update to 1.3.6.
+
 * Mon Feb 22 2021 Richard Shaw <hobbes1069@gmail.com> - 1.3.5-11
 - Update requires for devel package, fixes #1931645.
 
diff --git a/sources b/sources
index 9d7287a..314a5f8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (fltk-1.3.5-source.tar.gz) = db7ea7c5f3489195a48216037b9371a50f1119ae7692d66f71b6711e5ccf78814670581bae015e408dee15c4bba921728309372c1cffc90113cdc092e8540821
+SHA512 (fltk-1.3.6-source.tar.gz) = 7231cb733105e7b48ddd63aaa9fda241a625d8635615b331c63da2670dbef13da659fb4895111d2036c5fe5e7b0459873f6dccda4ef00f10c9f1a1d56c3615ba