diff --git a/5040 b/5040
index c968d23..d7325b3 100644
--- a/5040
+++ b/5040
@@ -37,10 +37,11 @@ postgresql-15.1
 freeglut-3.4.0
 giflib-5.2.2
 jpeg-9c
-tiff-4.5.0
+tiff-4.6.0
 libpng-1.6.37
 libXpm-3.5.12
 graphite2-1.3.13
+libwebp-1.1.0
 
 #HACK: rebuilding freetype twice is insane but necessary
 fribidi-1.0.12
diff --git a/patches/libtiff-4.6.0/0002-libtiff-install-headers.patch b/patches/libtiff-4.6.0/0002-libtiff-install-headers.patch
new file mode 100644
index 0000000..5947e19
--- /dev/null
+++ b/patches/libtiff-4.6.0/0002-libtiff-install-headers.patch
@@ -0,0 +1,15 @@
+--- a/libtiff/Makefile.am
++++ b/libtiff/Makefile.am
+@@ -37,8 +37,12 @@
+ 	tif_win32_versioninfo.rc
+ 
+ libtiffinclude_HEADERS = \
++	tif_config.h \
++	tif_dir.h \
++	tif_hash_set.h \
+ 	tiff.h \
+ 	tiffio.h \
++	tiffiop.h \
+ 	tiffvers.h
+ 
+ if HAVE_CXX
diff --git a/sources.list b/sources.list
index a1527d3..ac24f56 100755
--- a/sources.list
+++ b/sources.list
@@ -156,6 +156,7 @@ ftp://ftp.remotesensing.org/pub/libtiff/tiff-4.0.6.tar.gz
 ftp://download.osgeo.org/libtiff/tiff-4.0.7.tar.gz
 http://download.osgeo.org/libtiff/tiff-4.0.10.tar.gz
 http://download.osgeo.org/libtiff/tiff-4.5.0.tar.gz
+http://download.osgeo.org/libtiff/tiff-4.6.0.tar.gz
 
 #### fontconfig
 #URL http://fontconfig.org/release/