diff --git a/cmake b/cmake
index 07473b7253..4c3cd1146e 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit 07473b7253f32025c79471bcf13e69d7e74499e4
+Subproject commit 4c3cd1146e9be6d7e04a5978336351b73f82a691
diff --git a/src/ZeekPluginBootstrap.cmake.in b/src/ZeekPluginBootstrap.cmake.in
index 1e1e11713c..4a56007d41 100644
--- a/src/ZeekPluginBootstrap.cmake.in
+++ b/src/ZeekPluginBootstrap.cmake.in
@@ -17,3 +17,7 @@ set(ZEEK_CMAKE_INSTALL_PREFIX "@CMAKE_INSTALL_PREFIX@"
 # the package directory.
 set(ZEEK_PLUGIN_SCRIPTS_PATH "${ZEEK_CMAKE_CONFIG_DIR}"
     CACHE PATH "Path to utility scripts for building Zeek plugins." FORCE)
+
+# The CMAKE_BUILD_TYPE type to use for external plugins if not overridden.
+set(ZEEK_CMAKE_BUILD_TYPE "@CMAKE_BUILD_TYPE@"
+    CACHE PATH "Internal Zeek variable: CMAKE_BUILD_TYPE of Zeek." FORCE)