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@@ -256,6 +256,10 @@ C-API
Extension Modules
-----------------
+- Issue #4751: hashlib now releases the GIL when hashing large buffers
+ (with a hardwired threshold of 2048 bytes), allowing better parallelization
+ on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
+
- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
- Issue #4738: Each zlib object now has a separate lock, allowing to compress