diff --git a/rnp-v0.17.0-cpp14-googletest.patch b/rnp-v0.17.0-cpp14-googletest.patch
new file mode 100644
index 0000000..2496011
--- /dev/null
+++ b/rnp-v0.17.0-cpp14-googletest.patch
@@ -0,0 +1,20 @@
+https://github.com/rnpgp/rnp/pull/2209
+GoogleTest 1.14.0 requires C++ 14:
+
+[   26s] /usr/include/gtest/internal/gtest-port.h:279:2: error: #error C++ versions less than C++14 are not supported.
+[   26s]   279 | #error C++ versions less than C++14 are not supported.
+[   26s]       |  ^~~~~
+
+Index: rnp-v0.17.0/CMakeLists.txt
+===================================================================
+--- rnp-v0.17.0.orig/CMakeLists.txt
++++ rnp-v0.17.0/CMakeLists.txt
+@@ -137,7 +137,7 @@ endif(WIN32)
+ 
+ # set a few other things at the top level to prevent incompatibilities
+ set(CMAKE_C_STANDARD 99)
+-set(CMAKE_CXX_STANDARD 11)
++set(CMAKE_CXX_STANDARD 14)
+ set(CMAKE_CXX_STANDARD_REQUIRED ON)
+ set(CMAKE_CXX_EXTENSIONS OFF)
+ add_definitions(-D_GNU_SOURCE)
diff --git a/rnp.changes b/rnp.changes
index bf6cb42..bfef6e2 100644
--- a/rnp.changes
+++ b/rnp.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Apr  3 11:14:34 UTC 2024 - Andreas Stieger <andreas.stieger@gmx.de>
+
+- switch to C++14 to fix build with new GoogleTest 1.14.0
+  add rnp-v0.17.0-cpp14-googletest.patch
+
 -------------------------------------------------------------------
 Sat Jan 20 09:52:21 UTC 2024 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/rnp.spec b/rnp.spec
index 37f1119..26c3e5c 100644
--- a/rnp.spec
+++ b/rnp.spec
@@ -30,6 +30,7 @@ Patch0:         rnp-v0.17.0-disable-static.patch
 Patch2:         rnp-v0.17.0-system-sexp.patch
 Patch3:         rnp-v0.17.0-tests.patch
 Patch4:         rnp-v0.17.0-test-SHA1-cutoff.patch
+Patch5:         rnp-v0.17.0-cpp14-googletest.patch
 BuildRequires:  cmake >= 3.18
 BuildRequires:  gcc-c++
 BuildRequires:  gpg2 >= 2.2