diff --git a/.gitignore b/.gitignore
index 8a12b3c..550cf80 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /zstandard-0.17.0.tar.gz
 /zstandard-0.18.0.tar.gz
 /zstandard-0.19.0.tar.gz
+/zstandard-0.21.0.tar.gz
diff --git a/python-zstandard.spec b/python-zstandard.spec
index d7f00f7..bcd5c46 100644
--- a/python-zstandard.spec
+++ b/python-zstandard.spec
@@ -18,8 +18,8 @@
 compression library. A C extension and CFFI interface are provided.
 
 Name: python-%{pypi_name}
-Version: 0.19.0
-Release: 2%{?dist}
+Version: 0.21.0
+Release: 1%{?dist}
 Summary: Zstandard bindings for Python
 License: BSD and GPLv2
 URL: https://github.com/indygreg/python-zstandard
@@ -41,7 +41,7 @@ BuildRequires: python3-pytest
 BuildRequires: python3-pytest-xdist
 %endif
 # https://github.com/indygreg/python-zstandard/issues/48
-Provides: bundled(zstd) = 1.5.2
+Provides: bundled(zstd) = 1.5.5
 
 %description -n python3-%{pypi_name}
 %{desc}
@@ -72,6 +72,10 @@ mv zstandard{.src,}
 %{python3_sitearch}/%{pypi_name}
 
 %changelog
+* Wed May 24 2023 Dominik Mierzejewski <dominik@greysector.net> - 0.21.0-1
+- update to 0.21.0 (#2172363)
+- bump bundled zstd version
+
 * Fri Jan 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.19.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
 
diff --git a/sources b/sources
index 2bd9d55..7e92000 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zstandard-0.19.0.tar.gz) = 6350dc0bd4f1431cf4dbc951c3f7f1a4190938aff6c0ebc4f14d7a7ca82f2f47e201c73d80cd25bf476fc8760ddc99d6aa7dd3353086faedece4aa96608b6ef9
+SHA512 (zstandard-0.21.0.tar.gz) = fc46b676e9319180ffa8f626c55bcfbf13804cc75170255bfa7d7b614563276f3bb0fa84e6dba43501ef1cf920fdb90d39ddee2a1ac00139acd0da88ebc67d2a