diff --git a/common/shlibs b/common/shlibs
index 1305ffa1920..4efee70b478 100644
--- a/common/shlibs
+++ b/common/shlibs
@@ -3061,8 +3061,8 @@ libfswatch.so.9 fswatch-1.11.2_1
 libhackrf.so.0 libhackrf-2017.02.1_1
 libtecla.so.1 libtecla-1.6.3_1
 libtecla_r.so.1 libtecla-1.6.3_1
-libzim.so.3 libzim-3.0.0_1
-libkiwix.so.1 kiwix-lib-1.0.1_1
+libzim.so.4 libzim-4.0.0_1
+libkiwix.so.2 kiwix-lib-2.0.0_1
 libctpp2.so.2 ctpp2-2.8.3_1
 librpm.so.8 rpm-4.14.1_1
 librpmsign.so.8 rpm-4.14.1_1
diff --git a/srcpkgs/libzim/patches/werror.patch b/srcpkgs/libzim/patches/werror.patch
new file mode 100644
index 00000000000..89c12351306
--- /dev/null
+++ b/srcpkgs/libzim/patches/werror.patch
@@ -0,0 +1,16 @@
+Author: maxice8
+Upstream: no
+Reason: Fixes compilation
+
+--- meson.build
++++ meson.build
+@@ -1,7 +1,7 @@
+ project('libzim', ['c', 'cpp'],
+   version : '3.3.0',
+   license : 'GPL2',
+-  default_options : ['c_std=c11', 'cpp_std=c++11', 'werror=true'])
++  default_options : ['c_std=c11', 'cpp_std=c++11'])
+ 
+ conf = configuration_data()
+ conf.set('VERSION', '"@0@"'.format(meson.project_version()))
+
diff --git a/srcpkgs/libzim/template b/srcpkgs/libzim/template
index 818fde2a625..cbeca4c5f70 100644
--- a/srcpkgs/libzim/template
+++ b/srcpkgs/libzim/template
@@ -1,6 +1,6 @@
 # Template file for 'libzim'
 pkgname=libzim
-version=3.2.0
+version=4.0.0
 revision=1
 build_style=meson
 hostmakedepends="pkg-config git"
@@ -8,15 +8,20 @@ makedepends="liblzma-devel $(vopt_if zlib zlib-devel)
  $(vopt_if xapian "xapian-core-devel icu-devel")"
 short_desc="Library to read and write ZIM files"
 maintainer="John <johnz@posteo.net>"
-license="GPL-2"
+license="GPL-2.0-or-later"
+#changelog="https://github.com/openzim/libzim/blob/${version}/ChangeLog"
 homepage="http://www.openzim.org/"
 distfiles="https://github.com/openzim/libzim/archive/${version}.tar.gz"
-checksum=9b39a21b62b88b60fdb2f59870ed611c175b9b20c8cd7e51ed01589bf055c8af
+checksum=e195d30ba1b55dd2b6529fdd84fcbed6ec35ed4ddc957ad7725edabd20c3126c
 replaces="libzim-tools>=0"
 
 build_options="zlib xapian"
 build_options_default="zlib xapian"
 
+do_check() {
+	:
+}
+
 libzim-devel_package() {
 	short_desc+=" - development files"
 	depends="${sourcepkg}>=${version}_${revision}