diff --git a/CMakeLists.txt b/CMakeLists.txt
index 753564931..693be0142 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,7 +59,7 @@ if(XTENSOR_USE_TBB AND XTENSOR_USE_OPENMP)
 endif()
 
 if(XTENSOR_USE_XSIMD)
-    set(xsimd_REQUIRED_VERSION 10.0.0)
+    set(xsimd_REQUIRED_VERSION 11.0.0)
     if(TARGET xsimd)
         set(xsimd_VERSION ${XSIMD_VERSION_MAJOR}.${XSIMD_VERSION_MINOR}.${XSIMD_VERSION_PATCH})
         # Note: This is not SEMVER compatible comparison
diff --git a/docs/rtd_environment.yml b/docs/rtd_environment.yml
index 114c292d0..54fb700ca 100644
--- a/docs/rtd_environment.yml
+++ b/docs/rtd_environment.yml
@@ -1,8 +1,8 @@
 name: xtensor-docs
 
 channels:
-  - conda-forge
+- conda-forge
 
 dependencies:
-  - breathe
-  - sphinx_rtd_theme
+- breathe
+- sphinx_rtd_theme
diff --git a/environment-dev.yml b/environment-dev.yml
index efb744249..81dd49ab0 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -4,7 +4,7 @@ channels:
 dependencies:
 - cmake
 - xtl=0.7.5
-- xsimd=10.0.0
+- xsimd=11.1.0
 - nlohmann_json
 - doctest=2.4.7
 - pre-commit
diff --git a/readthedocs.yml b/readthedocs.yml
index 6cc465c9b..f21130321 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -1,9 +1,9 @@
 version: 2
 
 build:
-  os: "ubuntu-22.04"
+  os: ubuntu-22.04
   tools:
-    python: "mambaforge-22.9"
+    python: mambaforge-22.9
 
 conda:
   environment: docs/rtd_environment.yml