diff --git a/.gitignore b/.gitignore
index 7705306..508085f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 /proc-macro2-0.4.19.crate
 /proc-macro2-0.4.20.crate
 /proc-macro2-0.4.21.crate
+/proc-macro2-0.4.23.crate
diff --git a/rust-proc-macro2.spec b/rust-proc-macro2.spec
index 0df0e03..9b0834f 100644
--- a/rust-proc-macro2.spec
+++ b/rust-proc-macro2.spec
@@ -6,7 +6,7 @@
 %global crate proc-macro2
 
 Name:           rust-%{crate}
-Version:        0.4.21
+Version:        0.4.23
 Release:        1%{?dist}
 Summary:        Stable implementation of the upcoming new `proc_macro` API
 
@@ -81,6 +81,9 @@ which use "proc-macro" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Tue Nov 13 2018 Josh Stone <jistone@redhat.com> - 0.4.23-1
+- Update to 0.4.23
+
 * Sat Nov 10 2018 Josh Stone <jistone@redhat.com> - 0.4.21-1
 - Update to 0.4.21
 
diff --git a/sources b/sources
index 55a1b6c..a39dd08 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (proc-macro2-0.4.21.crate) = 9e0603d634d0748047dbc0e4c44dce54cba1026ed76945b09ed72224c015465cc8541d4045185f8b8cf6ff316daec50bc5a3ad7ddf5015aa971135497e5261ed
+SHA512 (proc-macro2-0.4.23.crate) = 50f914f61f48c9ae8df7b26270517a65ae65c799a3b26478ac70269675634f5d173481592a27f5a9e2b970f737f5fe9e32756ac4434511674a1110e8be8ea278