diff --git a/CMakeLists.txt b/CMakeLists.txt
index a40a3c2..f9124dc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -73,7 +73,7 @@ option(XWIDGETS_BUILD_TESTS "xwidgets test suite" OFF)
 # ============
 
 set(xeus_REQUIRED_VERSION 5.0.0)
-set(xproperty_REQUIRED_VERSION 0.11.0)
+set(xproperty_REQUIRED_VERSION 0.12.0)
 
 if(NOT TARGET xeus)
     find_package(xeus ${xeus_REQUIRED_VERSION} REQUIRED)
diff --git a/environment-dev.yml b/environment-dev.yml
index 1a89e1c..ef632a5 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -8,7 +8,7 @@ dependencies:
 - ninja
   # Host dependencies
 - xeus>=5.0.0,<6
-- xproperty=0.11.0
+- xproperty=0.12.0
 - nlohmann_json=3.11.3
   # Test dependencies
 - doctest >= 2.4.6
diff --git a/include/xwidgets/xjson.hpp b/include/xwidgets/xjson.hpp
index f5de796..4f01902 100644
--- a/include/xwidgets/xjson.hpp
+++ b/include/xwidgets/xjson.hpp
@@ -45,4 +45,3 @@ namespace nlohmann
 }
 
 #endif
-