diff --git a/.gitignore b/.gitignore
index 3a2328f..3094950 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@
 /espresso-4.1.3.tar.gz
 /espresso-4.1.4.tar.gz
 /espresso-4.2.0.tar.gz
+/espresso-4.2.1.tar.gz
diff --git a/espresso.spec b/espresso.spec
index f5248f0..e7ece4f 100644
--- a/espresso.spec
+++ b/espresso.spec
@@ -1,9 +1,9 @@
-%global commit 18d49bfc4b6ca5be264f16d262338fda1f9141a7
+%global commit 9bb2daf1c83f5932b145a6135f3a48f969639ef3
 %global shortcommit %(c=%{commit}; echo ${c:0:7})
 
 Name:           espresso
-Version:        4.2.0
-Release:        8%{?dist}
+Version:        4.2.1
+Release:        1%{?dist}
 Summary:        Extensible Simulation Package for Research on Soft matter
 # segfault on s390x: https://github.com/espressomd/espresso/issues/3753
 # segfault on armv7hl: https://src.fedoraproject.org/rpms/espresso/pull-request/4
@@ -12,12 +12,6 @@ ExcludeArch:    s390x i686 armv7hl
 License:        GPLv3+
 URL:            https://espressomd.org
 Source0:        https://github.com/%{name}md/%{name}/releases/download/%{version}/%{name}-%{version}.tar.gz
-# skip fragile ICC python interface test
-# https://github.com/espressomd/espresso/issues/4567
-Patch0:         %{name}-icc.patch
-# fix deprecated histogram function arguments removed in numpy 1.24
-# https://github.com/espressomd/espresso/pull/4635
-Patch1:         %{name}-numpy.patch
 
 BuildRequires:  gcc-c++
 BuildRequires:  cmake3 >= 3.16
@@ -107,8 +101,6 @@ This package contains %{name} compiled against MPICH2.
 
 %prep
 %setup -q -n %{name}
-%patch 0 -p1
-%patch 1 -p1
 
 %build
 %global defopts \\\
@@ -166,6 +158,9 @@ done
 %{python3_sitearch}/mpich/%{name}md/
 
 %changelog
+* Mon Apr 17 2023 Jean-Noël Grad <jgrad@icp.uni-stuttgart.de> - 4.2.1-1
+- Version bump to v4.2.1
+
 * Sat Apr 01 2023 Jean-Noël Grad <jgrad@icp.uni-stuttgart.de> - 4.2.0-8
 - Skip fragile ICC python interface test
 
diff --git a/sources b/sources
index 1720c8b..935de58 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (espresso-4.2.0.tar.gz) = b80afb1bef57911fd79b88378a5b2e31b07a18d415fe17fcd5ed28fb448eeca5922f98af8df42117e9e869645765d55ecfb3aae615fa6a53c915f7d8a63081c5
+SHA512 (espresso-4.2.1.tar.gz) = f37102bef44dfd515515bcd3334304845e1552b0f15514c00c3692ac9875b6496538c71fb887475fc5d37b155b2e777c47649fb8c5fc7d6e7b328d8995fdf6a0