diff --git a/.gitignore b/.gitignore
index 3d7a0e2..076b409 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 /cpprest-2.10.15.tar.gz
 /cpprest-2.10.16.tar.gz
 /cpprest-2.10.17.tar.gz
+/cpprest-2.10.18.tar.gz
diff --git a/cpprest.spec b/cpprest.spec
index 90772a4..e7d3ca7 100644
--- a/cpprest.spec
+++ b/cpprest.spec
@@ -1,8 +1,9 @@
+%undefine __cmake_in_source_build
 %define major 2
 %define minor 10
 Name:           cpprest
-Version:        2.10.17
-Release:        2%{?dist}
+Version:        2.10.18
+Release:        1%{?dist}
 Summary:        C++ REST library
 License:        MIT
 Url:            https://github.com/Microsoft/cpprestsdk
@@ -93,6 +94,9 @@ cd Release/%{_vpath_builddir}/Binaries
 
 
 %changelog
+* Wed Feb 03 2021 Wolfgang Stöggl <c72578@yahoo.de> - 2.10.18-1
+- New upstream version 2.10.18
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.10.17-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
 
diff --git a/sources b/sources
index 1629226..4028d44 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (cpprest-2.10.17.tar.gz) = 9398b7eb64012a1683c675220c3fdc8ecc359d175c425871983f12f0f509f10db1a97f50dad6c05d0509292b3d1baf9a6a2514d760b430cfbc66db082d23ab82
+SHA512 (cpprest-2.10.18.tar.gz) = 5f0699e7ba509e16d6a3000e6ac448f6dbc134b8e03de9ab174ba749ad7efa76cbfccb623b226d82f5dba35ef6292f0cdf121b5315d524a5a28454038d420fab