diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -32,7 +32,7 @@ message(STATUS "xtensor-python v${${PROJECT_NAME}_VERSION}")
 # Dependencies
 # ============
 
-set(xtensor_REQUIRED_VERSION 0.26.0)
+set(xtensor_REQUIRED_VERSION 0.27.0)
 if(TARGET xtensor)
     set(xtensor_VERSION ${XTENSOR_VERSION_MAJOR}.${XTENSOR_VERSION_MINOR}.${XTENSOR_VERSION_PATCH})
     # Note: This is not SEMVER compatible comparison
@@ -48,7 +48,7 @@ endif()
 
 find_package(Python COMPONENTS Interpreter REQUIRED)
 
-set(pybind11_REQUIRED_VERSION 2.6.1)
+set(pybind11_REQUIRED_VERSION 3.0.0)
 if (NOT TARGET pybind11::headers)
     # Defaults to ON for cmake >= 3.18
     # https://github.com/pybind/pybind11/blob/35ff42b56e9d34d9a944266eb25f2c899dbdfed7/CMakeLists.txt#L96

diff --git a/environment-dev.yml b/environment-dev.yml
@@ -6,7 +6,7 @@ dependencies:
   - cmake
   - ninja
   # Host dependencies
-  - xtensor>=0.26,<0.27
+  - xtensor>=0.27,<0.28
   - numpy>=2.0
   - pybind11>=2.12.0,<4
   # Test dependencies

diff --git a/test_python/setup.py b/test_python/setup.py
@@ -78,8 +78,8 @@ def cpp_flag(compiler):
     """Return the -std=c++17 compiler flag  and errors when the flag is
     no available.
     """
-    if has_flag(compiler, '-std=c++17'):
-        return '-std=c++17'
+    if has_flag(compiler, '-std=c++20'):
+        return '-std=c++20'
     else:
         raise RuntimeError('C++17 support is required by xtensor!')
 
@@ -104,7 +104,7 @@ def build_extensions(self):
                 opts.append('-fvisibility=hidden')
         elif ct == 'msvc':
             opts.append('/DVERSION_INFO=\\"%s\\"' % self.distribution.get_version())
-            opts.append('/std:c++17')
+            opts.append('/std:c++20')
         for ext in self.extensions:
             ext.extra_compile_args = opts
         build_ext.build_extensions(self)