diff --git a/afl.changes b/afl.changes
index 91fa3f3..48ef925 100644
--- a/afl.changes
+++ b/afl.changes
@@ -1,3 +1,44 @@
+-------------------------------------------------------------------
+Mon Apr 15 09:44:22 UTC 2024 - Marcus Meissner <meissner@suse.com>
+
+- updated to 4.20c
+  + A new forkserver communication model is now introduced. afl-fuzz is
+    backward compatible to old compiled targets if they are not built
+    for CMPLOG/Redqueen, but new compiled targets will not work with
+    old afl-fuzz versions!
+  + Recompile all targets that are instrumented for CMPLOG/Redqueen!
+  - AFL++ now supports up to 4 billion coverage edges, up from 6 million.
+  - New compile option: `make PERFORMANCE=1` - this will enable special
+    CPU dependent optimizations that make everything more performant - but
+    the binaries will likely won't work on different platforms. Also
+    enables a faster hasher if the CPU requirements are met.
+  - The persistent record feature (see config.h) was expanded to also
+    support replay, thanks to @quarta-qti !
+  - afl-fuzz:
+    - the new deterministic fuzzing feature is now activated by default,
+      deactivate with -z. Parameters -d and -D are ignored.
+    - small improvements to CMPLOG/redqueen
+    - workround for a bug with MOpt -L when used with -M - in the future
+      we will either remove or rewrite MOpt.
+    - fix for `-t xxx+` feature
+    - -e extension option now saves the queue items, crashes, etc. with the
+      extension too
+    - fixes for trimmming, correct -V time and reading stats on resume by eqv
+      thanks a lot!
+  - afl-cc:
+    - added collision free caller instrumentation to LTO mode. activate with
+      `AFL_LLVM_LTO_CALLER=1`. You can set a max depth to go through single
+      block functions with `AFL_LLVM_LTO_CALLER_DEPTH` (default 0)
+    - fixes for COMPCOV/LAF and most other modules
+    - fix for GCC_PLUGIN cmplog that broke on std::strings
+  - afl-whatsup:
+    - now also displays current average speed
+    - small bugfixes
+  - Fixes for aflpp custom mutator and standalone tool
+  - Minor edits to afl-persistent-config
+  - Prevent temporary files being left behind on aborted afl-whatsup
+  - More CPU benchmarks added to benchmark/
+
 -------------------------------------------------------------------
 Mon Feb  5 10:30:56 UTC 2024 - Marcus Meissner <meissner@suse.com>
 
diff --git a/afl.spec b/afl.spec
index 270bfb1..5d8000a 100644
--- a/afl.spec
+++ b/afl.spec
@@ -27,7 +27,7 @@
 %endif
 
 Name:           afl
-Version:        4.10c
+Version:        4.20c
 Release:        0
 Summary:        American fuzzy lop is a security-oriented fuzzer
 #URL:            https://lcamtuf.coredump.cx/afl/
diff --git a/v4.10c.tar.gz b/v4.10c.tar.gz
deleted file mode 100644
index a91927c..0000000
--- a/v4.10c.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c9a43894b87502a5f69efdb97dee637c9dd4d2c5dfef1c9d79b9d406adafdb76
-size 2955420
diff --git a/v4.20c.tar.gz b/v4.20c.tar.gz
new file mode 100644
index 0000000..0b1e633
--- /dev/null
+++ b/v4.20c.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:855ddefbe9c88911146c1b7cb50dc5423b7623a7a59343f34f31bf038a865a24
+size 2997342