diff --git a/.gitignore b/.gitignore
index 6e2e645..1c82fbd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /num-iter-0.1.36.crate
 /num-iter-0.1.37.crate
 /num-iter-0.1.38.crate
+/num-iter-0.1.39.crate
diff --git a/rust-num-iter.spec b/rust-num-iter.spec
index 607aaa6..347bb4f 100644
--- a/rust-num-iter.spec
+++ b/rust-num-iter.spec
@@ -5,7 +5,7 @@
 %global crate num-iter
 
 Name:           rust-%{crate}
-Version:        0.1.38
+Version:        0.1.39
 Release:        1%{?dist}
 Summary:        External iterators for generic mathematics
 
@@ -17,7 +17,7 @@ Source:         %{crates_source}
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-BuildRequires:  (crate(autocfg/default) >= 0.1.2 with crate(autocfg/default) < 0.2.0)
+BuildRequires:  (crate(autocfg/default) >= 0.1.3 with crate(autocfg/default) < 0.2.0)
 BuildRequires:  (crate(num-integer) >= 0.1.38 with crate(num-integer) < 0.2.0)
 BuildRequires:  (crate(num-integer/std) >= 0.1.38 with crate(num-integer/std) < 0.2.0)
 BuildRequires:  (crate(num-traits) >= 0.2.4 with crate(num-traits) < 0.3.0)
@@ -94,6 +94,9 @@ which use "std" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Wed May 22 2019 Josh Stone <jistone@redhat.com> - 0.1.39-1
+- Update to 0.1.39
+
 * Mon May 20 2019 Josh Stone <jistone@redhat.com> - 0.1.38-1
 - Update to 0.1.38
 
diff --git a/sources b/sources
index 55195ae..7d9040c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (num-iter-0.1.38.crate) = 4b1170840b96a8a329d212d13077f357a11f3e545706ff640b22be402697c1007bc186ea7b97c2931bb7662743637e9e57cb37053a58edb0548781bd1e5d4d83
+SHA512 (num-iter-0.1.39.crate) = 4f6e94c4f5e7ea1a95d76a61a4be4c5ac3b3e8ca0a2271b721c265881e47b0454525918aa207bcad738de8e19ca7c5e5c915a1c4c158d5c9c2e68d05649bdaf8