diff --git a/databases/pgagent/files/patch-cmake_FindPG.cmake b/databases/pgagent/files/patch-cmake_FindPG.cmake
new file mode 100644
index 000000000000..922299cc04b0
--- /dev/null
+++ b/databases/pgagent/files/patch-cmake_FindPG.cmake
@@ -0,0 +1,17 @@
+Unbreak with PostgreSQL 11+.  PG_PATCH_VERSION is never used except
+for cosmetics (the configuration summary), so it is safe to just
+leave it blank.
+
+CMake Error at cmake/FindPG.cmake:74 (LIST):
+  LIST index: 2 out of range (-2, 1)
+
+--- cmake/FindPG.cmake.orig	2019-08-03 09:09:29 UTC
++++ cmake/FindPG.cmake
+@@ -71,7 +71,6 @@ IF(NOT _retval)
+     STRING(REGEX MATCHALL "[0-9]+" PG_VERSION_PARTS "${PG_VERSION_STRING}")
+     LIST(GET PG_VERSION_PARTS 0 PG_MAJOR_VERSION)
+     LIST(GET PG_VERSION_PARTS 1 PG_MINOR_VERSION)
+-    LIST(GET PG_VERSION_PARTS 2 PG_PATCH_VERSION)
+ 
+     # Are extensions supported?
+     IF((PG_MAJOR_VERSION GREATER 9) OR ((PG_MAJOR_VERSION EQUAL 9) AND (PG_MINOR_VERSION GREATER 0)))