diff --git a/.gitignore b/.gitignore
index 0e670c3..4dcbace 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,3 +33,4 @@
 /yosys-389b8d0.tar.gz
 /yosys-05f0262.tar.gz
 /yosys-8367f06.tar.gz
+/yosys-d87bd7c.tar.gz
diff --git a/sources b/sources
index fb6137f..f9ea05d 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (yosys-8367f06.tar.gz) = a088883e7ea68c5c170c0b9ffe3060935f0f7ab0efb7c7f7fd43f77f129e6c6064d60306dc694aa4732ba5a376a4758d2150e2c69cf692e821d4d797b95b294a
+SHA512 (yosys-d87bd7c.tar.gz) = 27b34fb093593edf71db78a3243faca5be55b0a858a1e2d96038be33d25b9cc640384bdce8857e1c369d868e6e49a9259efc239afdb8e383de2e9a5363f1da0e
 SHA512 (yosys_0.9-1.debian.tar.xz) = d9df5637efc730b2b681daa8a5933803dba70dca5b31fe4ac13601032eccd9105c001563cf627fbdd2d4ebad8551f2647e882fbf107a7df98badb2d200e2b4dc
diff --git a/yosys-5691cd0.tar.gz b/yosys-5691cd0.tar.gz
deleted file mode 100644
index 593613a..0000000
Binary files a/yosys-5691cd0.tar.gz and /dev/null differ
diff --git a/yosys.spec b/yosys.spec
index 4d09639..8630539 100644
--- a/yosys.spec
+++ b/yosys.spec
@@ -1,12 +1,12 @@
-%global commit0 5691cd095848f89f9f84a29f267fdebe95bae832
+%global commit0 d87bd7ca3fcd898cbc310904a55150e9bce7b544
 %global shortcommit0 %%(c=%%{commit0}; echo ${c:0:7})
 
-%global snapdate 20231108
+%global snapdate 20231218
 
 %global __python %{__python3}
 
 Name:           yosys
-Version:        0.35
+Version:        0.36
 Release:        1.%{snapdate}git%{shortcommit0}%{?dist}
 Summary:        Yosys Open SYnthesis Suite, including Verilog synthesizer
 License:        ISC and MIT
@@ -174,6 +174,9 @@ make test ABCEXTERNAL=%{_bindir}/abc SEED=314159265359
 
 
 %changelog
+* Mon Dec 18 2023 Gabriel Somlo <gsomlo@gmail.com> - 0.36.1.20231218gitd87bd7c
+- update to 0.36 snapshot
+
 * Wed Nov 08 2023 Gabriel Somlo <gsomlo@gmail.com> - 0.35.1.20231108git5691cd0
 - update to 0.35 snapshot