diff --git a/ocaml-ppx-deriving.spec b/ocaml-ppx-deriving.spec
index 99de68d..f5c68f7 100644
--- a/ocaml-ppx-deriving.spec
+++ b/ocaml-ppx-deriving.spec
@@ -6,8 +6,8 @@
 %global upname  ppx_deriving
 
 Name:           ocaml-%{srcname}
-Version:        5.1
-Release:        2%{?dist}
+Version:        5.2.1
+Release:        1%{?dist}
 Summary:        Type-driven code generation for OCaml
 
 License:        MIT
@@ -18,11 +18,10 @@ BuildRequires:  ocaml >= 4.05.0
 BuildRequires:  ocaml-cppo
 BuildRequires:  ocaml-dune >= 1.6.3
 BuildRequires:  ocaml-findlib-devel
-BuildRequires:  ocaml-migrate-parsetree-devel
 BuildRequires:  ocaml-odoc
 BuildRequires:  ocaml-ounit-devel
 BuildRequires:  ocaml-ppx-derivers-devel
-BuildRequires:  ocaml-ppxlib-devel >= 0.14.0
+BuildRequires:  ocaml-ppxlib-devel >= 0.20.0
 BuildRequires:  ocaml-result-devel
 
 # See https://bugzilla.redhat.com/show_bug.cgi?id=1896793
@@ -36,7 +35,6 @@ map (iter), fold (iter), make, yojson, and protobuf.
 %package        devel
 Summary:        Development files for %{name}
 Requires:       %{name}%{?_isa} = %{version}-%{release}
-Requires:       ocaml-migrate-parsetree-devel%{?_isa}
 Requires:       ocaml-ppx-derivers-devel%{?_isa}
 Requires:       ocaml-ppxlib-devel%{?_isa}
 
@@ -54,9 +52,6 @@ Documentation for %{name}.
 %prep
 %autosetup -n %{upname}-%{version} -p1
 
-# Work around name change for ounit
-sed -i 's/oUnit/ounit2/g' src_test/*/dune
-
 %build
 dune build %{?_smp_mflags}
 dune build %{?_smp_mflags} @doc
@@ -140,6 +135,9 @@ dune runtest
 %license LICENSE.txt
 
 %changelog
+* Sat Feb 20 2021 Jerry James <loganjerry@gmail.com> - 5.2.1-1
+- Version 5.2.1
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 5.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
diff --git a/sources b/sources
index 494ed19..b75e4a7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ppx_deriving-5.1.tar.gz) = 3d1655dea3cd9a023d6a9b58115574d598bdbe61fd7977d5de1601515b2b9fc4ab81f95e91dd79b427343baf503e5b2851cd1d94a4cf89b4b8bc595f302f2988
+SHA512 (ppx_deriving-5.2.1.tar.gz) = 01d2eb920f3375960a9228138ccb5f2af49bfba1111894795c24b3c37d5a021d6bc95e9de1d867c35d03645334300ccc89f1fca0cb75007ec62e5620f328e078