diff --git a/CMakeLists.txt.in b/CMakeLists.txt.in
index 90e653b..edba792 100644
--- a/CMakeLists.txt.in
+++ b/CMakeLists.txt.in
@@ -46,7 +46,7 @@
 
 externalproject_add (
     nlohmann-json GIT_REPOSITORY "https://github.com/nlohmann/json.git" GIT_TAG
-    d2dd27dc3b8472dbaa7d66f83619b3ebcd9185fe SOURCE_DIR
+    aafad2be1f3cd259a1e79d2f6fcf267d1ede9ec7 SOURCE_DIR
     "${CMAKE_BINARY_DIR}/nlohmann-json-src" BINARY_DIR
     "${CMAKE_BINARY_DIR}/nlohmann-json-build" CONFIGURE_COMMAND "" BUILD_COMMAND
     "" INSTALL_COMMAND mkdir -p "${CMAKE_BINARY_DIR}/prefix/include/nlohmann" &&