diff --git a/0001-Fix-build-with-zlib.patch b/0001-Fix-build-with-zlib.patch
new file mode 100644
index 0000000..188a33e
--- /dev/null
+++ b/0001-Fix-build-with-zlib.patch
@@ -0,0 +1,26 @@
+From 9ed6834c72971998fce2ea3319b76184969ad93c Mon Sep 17 00:00:00 2001
+From: Christophe Giboudeaux <christophe@krop.fr>
+Date: Wed, 12 Jan 2022 10:35:34 +0100
+Subject: [PATCH] Fix build with zlib
+
+---
+ code/Common/ZipArchiveIOSystem.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/code/Common/ZipArchiveIOSystem.cpp b/code/Common/ZipArchiveIOSystem.cpp
+index 9870fa9d0..685cc8b5d 100644
+--- a/code/Common/ZipArchiveIOSystem.cpp
++++ b/code/Common/ZipArchiveIOSystem.cpp
+@@ -196,7 +196,9 @@ zlib_filefunc_def IOSystem2Unzip::get(IOSystem *pIOHandler) {
+     zlib_filefunc_def mapping;
+ 
+     mapping.zopen_file = (open_file_func)open;
++#ifdef ZOPENDISK64
+     mapping.zopendisk_file = (opendisk_file_func)opendisk;
++#endif
+     mapping.zread_file = (read_file_func)read;
+     mapping.zwrite_file = (write_file_func)write;
+     mapping.ztell_file = (tell_file_func)tell;
+-- 
+2.34.1
+
diff --git a/_service b/_service
index aff483f..5def353 100644
--- a/_service
+++ b/_service
@@ -2,7 +2,7 @@
     <service name="tar_scm" mode="disabled">
         <param name="scm">git</param>
         <param name="url">git://github.com/assimp/assimp</param>
-        <param name="revision">v5.1.5</param>
+        <param name="revision">v5.1.6</param>
         <param name="versionformat">@PARENT_TAG@</param>
         <param name="versionrewrite-pattern">v(.*)</param>
         <!-- non-OSI media -->
diff --git a/assimp-5.1.5.tar.xz b/assimp-5.1.5.tar.xz
deleted file mode 100644
index 78d8e85..0000000
--- a/assimp-5.1.5.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0517e8ea3d2af8063ece23d19456f19c85dbb8040a8243561da90bf50638e14d
-size 24574048
diff --git a/assimp-5.1.6.tar.xz b/assimp-5.1.6.tar.xz
new file mode 100644
index 0000000..bb9a1fa
--- /dev/null
+++ b/assimp-5.1.6.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:876bd1dbc0ed7ab4f9fb42c50c0404d638380e656fb9896a7c6d0cff972c4e28
+size 24595068
diff --git a/assimp.changes b/assimp.changes
index 6e2bd46..d019709 100644
--- a/assimp.changes
+++ b/assimp.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Mon Jan 10 09:28:29 UTC 2022 - Christophe Giboudeaux <christophe@krop.fr>
+
+- Update to 5.1.6:
+  * Add link to used enum for a better understandability
+  * Fix fuzzer crashes
+  * Fix nullptr-dereferencing
+  * Fix bone fitted check in gltf2 exporter
+- Add patch:
+  * 0001-Fix-build-with-zlib.patch (gh#assimp/assimp#4334)
+
 -------------------------------------------------------------------
 Tue Jan  4 11:59:17 UTC 2022 - Christophe Giboudeaux <christophe@krop.fr>
 
diff --git a/assimp.spec b/assimp.spec
index 33ecbb1..da40a2a 100644
--- a/assimp.spec
+++ b/assimp.spec
@@ -18,13 +18,15 @@
 
 %define sover 5
 Name:           assimp
-Version:        5.1.5
+Version:        5.1.6
 Release:        0
 Summary:        Library to load and process 3D scenes from various data formats
 License:        BSD-3-Clause AND MIT
 Group:          Development/Libraries/C and C++
 URL:            https://www.assimp.org/
 Source0:        %{name}-%{version}.tar.xz
+# PATCH-FIX-UPSTREAM
+Patch0:         0001-Fix-build-with-zlib.patch
 BuildRequires:  cmake
 BuildRequires:  dos2unix
 BuildRequires:  gcc-c++