diff --git a/.gitignore b/.gitignore
index 6af6ead..8dde1e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,4 @@
 /yosys-5691cd0.tar.gz
 /yosys-d87bd7c.tar.gz
 /yosys-6a7fad4.tar.gz
+/yosys-ac0fb2e.tar.gz
diff --git a/sources b/sources
index 5c9627f..4c5c706 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (yosys-6a7fad4.tar.gz) = 28dba03c097d7244c630db9e996f791732790edbd6c91fe97dd058770ff4a27f05be986c16646c6ba7e1681373b1410216f1922d502db48878b351c0cde82cf1
+SHA512 (yosys-ac0fb2e.tar.gz) = 2ec431c62c64e35eab552194b8a8f5ebd5edd7f1d9da005ac6a121d0f237352d421f1e512701ba01b1d3ad96f109d7d4c48a97e0a325052093d125f739eb3ca4
 SHA512 (yosys_0.9-1.debian.tar.xz) = d9df5637efc730b2b681daa8a5933803dba70dca5b31fe4ac13601032eccd9105c001563cf627fbdd2d4ebad8551f2647e882fbf107a7df98badb2d200e2b4dc
diff --git a/yosys.spec b/yosys.spec
index 2dd0f3f..119a2b9 100644
--- a/yosys.spec
+++ b/yosys.spec
@@ -1,12 +1,12 @@
-%global commit0 6a7fad4dd9f094854f45875fa57897934d924f6e
+%global commit0 ac0fb2e301188178ea691f2ef156d0af6f4f967f
 %global shortcommit0 %%(c=%%{commit0}; echo ${c:0:7})
 
-%global snapdate 20240117
+%global snapdate 20240210
 
 %global __python %{__python3}
 
 Name:           yosys
-Version:        0.37
+Version:        0.38
 Release:        1.%{snapdate}git%{shortcommit0}%{?dist}
 Summary:        Yosys Open SYnthesis Suite, including Verilog synthesizer
 License:        ISC and MIT
@@ -174,6 +174,12 @@ make test ABCEXTERNAL=%{_bindir}/abc SEED=314159265359
 
 
 %changelog
+* Sat Feb 10 2024 Gabriel Somlo <gsomlo@gmail.com> - 0.38.1.20240210gitac0fb2e
+- update to 0.38 snapshot
+
+* Sat Jan 27 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.37-2.20240117git6a7fad4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
 * Wed Jan 17 2024 Gabriel Somlo <gsomlo@gmail.com> - 0.37.1.20240117git6a7fad4
 - update to 0.37 snapshot