diff --git a/0.8.0.tar.gz b/0.8.0.tar.gz
deleted file mode 100644
index 4b35e17..0000000
--- a/0.8.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:542e2d6cd4d3013bc4f97843cb1e9521b1b8d8ea72a55c9f5f040857486b0157
-size 2986821
diff --git a/0.9.0.tar.gz b/0.9.0.tar.gz
new file mode 100644
index 0000000..4ba7b16
--- /dev/null
+++ b/0.9.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e6940b4d6dd631e88a2e42f137d12dc59babbd5073751846cabfb4221ece7ad0
+size 3318875
diff --git a/baselibs.conf b/baselibs.conf
index 435cdf5..47862aa 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1,2 +1,2 @@
-liboqs3
+liboqs4
 liboqs-devel
diff --git a/liboqs.changes b/liboqs.changes
index bcb608e..467061d 100644
--- a/liboqs.changes
+++ b/liboqs.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Fri Oct 13 07:31:49 UTC 2023 - Marcus Meissner <meissner@suse.com>
+
+- updated to 0.9.0
+
+  This release features an update to the Classic McEliece KEM, bringing it
+  in line with NIST Round 4. It also adds or updates ARM implementations
+  for Kyber,   Dilithium, and Falcon.
+
+- major library version 4
+
 -------------------------------------------------------------------
 Thu Jun  8 07:14:12 UTC 2023 - Marcus Meissner <meissner@suse.com>
 
diff --git a/liboqs.spec b/liboqs.spec
index b94de3c..41aafaf 100644
--- a/liboqs.spec
+++ b/liboqs.spec
@@ -17,7 +17,7 @@
 
 
 Name:           liboqs
-Version:        0.8.0
+Version:        0.9.0
 Release:        0
 Summary:        C library for quantum-resistant cryptographic algorithms
 License:        MIT
@@ -35,18 +35,18 @@ BuildRequires:  libopenssl-devel
 liboqs is a C library for quantum-resistant cryptographic algorithms.
 See the bundled README.md for particular limitations on intended use.
 
-%package -n liboqs3
+%package -n liboqs4
 Summary:        C library for quantum-resistant cryptographic algorithms
 Group:          System/Libraries
 
-%description -n liboqs3
+%description -n liboqs4
 liboqs is a C library for quantum-resistant cryptographic algorithms.
 See the bundled README.md for particular limitations on intended use.
 
 %package devel
 Summary:        Headers for liboqs, a library for quantum-resistant cryptography
 Group:          Development/Languages/C and C++
-Requires:       liboqs3 = %{version}
+Requires:       liboqs4 = %{version}
 
 %description devel
 liboqs is a C library for quantum-resistant cryptographic algorithms.
@@ -78,13 +78,13 @@ mv %{buildroot}%{_prefix}/local/* %{buildroot}%{_prefix}
 
 rmdir %{buildroot}%{_prefix}/local/
 
-%post -n liboqs3 -p /sbin/ldconfig
-%postun -n liboqs3 -p /sbin/ldconfig
+%post -n liboqs4 -p /sbin/ldconfig
+%postun -n liboqs4 -p /sbin/ldconfig
 
-%files -n liboqs3
+%files -n liboqs4
 %license LICENSE.txt
-%{_libdir}/liboqs.so.0.8.0
-%{_libdir}/liboqs.so.3
+%{_libdir}/liboqs.so.0.9.0
+%{_libdir}/liboqs.so.4
 %doc README.md
 
 %files devel