diff --git a/.gitignore b/.gitignore
index aeb4903..cc80b7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /dune-1.8.0.tar.gz
 /dune-1.8.2.tar.gz
 /dune-1.9.0.tar.gz
+/dune-1.9.1.tar.gz
diff --git a/ocaml-dune.spec b/ocaml-dune.spec
index 84df7db..6ef7bfa 100644
--- a/ocaml-dune.spec
+++ b/ocaml-dune.spec
@@ -1,5 +1,5 @@
 Name:           ocaml-dune
-Version:        1.9.0
+Version:        1.9.1
 Release:        1%{?dist}
 Summary:        A composable build system for OCaml
 
@@ -106,6 +106,9 @@ cp -ar README.md CHANGES.md doc/_build/* %{buildroot}%{_pkgdocdir}/
 %doc %{_pkgdocdir}/*
 
 %changelog
+* Thu Apr 11 2019 Andy Li <andy@onthewings.net> - 1.9.1-1
+- Updated to latest upstream release (#1698732).
+
 * Wed Apr 10 2019 Andy Li <andy@onthewings.net> - 1.9.0-1
 - Updated to latest upstream release (#1698022).
 
diff --git a/sources b/sources
index 0c75dc7..1764090 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (dune-1.9.0.tar.gz) = 3666d07bc339fb95796c8422b9f38d8aa5eb68e393de7b94a269af865de11766866bad143d7552daf69e537e7b9a186a53e7f16bdbbd758096d817fc8d9b5302
+SHA512 (dune-1.9.1.tar.gz) = 636d39328e89761961da2f0371fe1bb60af50b51858883ac31a8c667b2fceff6b1b193663d9acf4c073ef06c5e0382ccda653a2be2d26496b1ad706bbc9d3eed