diff --git a/2946.patch b/2946.patch
new file mode 100644
index 0000000..e574302
--- /dev/null
+++ b/2946.patch
@@ -0,0 +1,21 @@
+From 1acce67ef18bc7cff34f8f0d8455dd1e7e38812c Mon Sep 17 00:00:00 2001
+From: Christoph Junghans <junghans@lanl.gov>
+Date: Wed, 26 Jun 2019 11:57:51 -0600
+Subject: [PATCH 1/2] cmake: add soversion to libH5mdCore
+
+---
+ src/core/io/writer/CMakeLists.txt | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/core/io/writer/CMakeLists.txt b/src/core/io/writer/CMakeLists.txt
+index d0256da721..b0ce2c1d4a 100644
+--- a/src/core/io/writer/CMakeLists.txt
++++ b/src/core/io/writer/CMakeLists.txt
+@@ -7,5 +7,6 @@ target_include_directories(H5mdCore SYSTEM PUBLIC
+ 
+ add_dependencies(H5mdCore EspressoConfig)
+ target_include_directories(H5mdCore PRIVATE ${CMAKE_SOURCE_DIR}/src/core ${CMAKE_BINARY_DIR}/src/core)
++set_target_properties(H5mdCore PROPERTIES SOVERSION ${SOVERSION})
+ install(TARGETS H5mdCore LIBRARY DESTINATION ${LIBDIR})
+ endif()
+