diff --git a/NEWS.md b/NEWS.md
index 83a44bf2..ca28d592 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,27 @@
 # libdeflate release notes
 
+## Version 1.20
+
+* Improved CRC-32 performance on recent x86 CPUs by adding
+  VPCLMULQDQ-accelerated implementations using 256-bit and 512-bit vectors.
+
+* Improved Adler-32 performance on recent x86 CPUs by adding
+  VNNI-accelerated implementations using 256-bit and 512-bit vectors.
+
+* Improved CRC-32 and Adler-32 performance on short inputs.
+
+* Optimized the portable implementation of Adler-32.
+
+* Added some basic optimizations for RISC-V.
+
+* Dropped support for gcc versions older than v4.9 (released in 2014)
+  and clang versions older than v3.9 (released in 2016).
+
+* Dropped support for CRC-32 acceleration on 32-bit ARM using the ARMv8 pmull or
+  crc32 instructions.  This code only worked on CPUs that also have a 64-bit
+  mode, and it was already disabled on many compiler versions due to compiler
+  limitations.  CRC-32 acceleration remains fully supported on 64-bit ARM.
+
 ## Version 1.19
 
 * Added new functions `libdeflate_alloc_compressor_ex()` and
diff --git a/libdeflate.h b/libdeflate.h
index 0a274f0f..05dac048 100644
--- a/libdeflate.h
+++ b/libdeflate.h
@@ -13,8 +13,8 @@ extern "C" {
 #endif
 
 #define LIBDEFLATE_VERSION_MAJOR	1
-#define LIBDEFLATE_VERSION_MINOR	19
-#define LIBDEFLATE_VERSION_STRING	"1.19"
+#define LIBDEFLATE_VERSION_MINOR	20
+#define LIBDEFLATE_VERSION_STRING	"1.20"
 
 /*
  * Users of libdeflate.dll on Windows can define LIBDEFLATE_DLL to cause