diff --git a/.github/workflows/build_recipes.yaml b/.github/workflows/build_recipes.yaml
index 753496670..498ef30f8 100644
--- a/.github/workflows/build_recipes.yaml
+++ b/.github/workflows/build_recipes.yaml
@@ -59,14 +59,6 @@ jobs:
           cache-environment: true
           post-cleanup: 'all'
 
-      ################################################################
-      # EMSDK
-      ################################################################
-      - name: Setup emsdk
-        shell: bash -el {0}
-        run: |
-          ./emsdk/setup_emsdk.sh ${{ matrix.emsdk_ver }} $(pwd)/emsdk_install
-
       ################################################################
       # POST ENV INSTALL CONFIG
       ################################################################
@@ -106,6 +98,6 @@ jobs:
             mkdir -p ${GITHUB_WORKSPACE}/output/${platform}
             for package in $(ls ${GITHUB_WORKSPACE}/output/${platform}/*.tar.bz2); do
               echo "Uploading ${package} for  ${platform} (build with rattler)"
-              QUETZ_API_KEY=${{ secrets.QUETZ_API_KEY}} quetz-client -u https://beta.mamba.pm post_file_to_channel emscripten-forge ${package}
+              QUETZ_API_KEY=${{ secrets.QUETZ_API_KEY}} quetz-client -u https://beta.mamba.pm post_file_to_channel emscripten-forge ${package} || true
             done
           done
\ No newline at end of file
diff --git a/docs/blog/.authors.yml b/docs/blog/.authors.yml
index eebd7268c..e7aa3a399 100644
--- a/docs/blog/.authors.yml
+++ b/docs/blog/.authors.yml
@@ -5,3 +5,10 @@ authors:
     avatar: https://avatars.githubusercontent.com/u/904752?v=4         # Author avatar
     slug: DerThorsten           # Author profile slug
     url: https://github.com/DerThorsten            # Author website URL
+  
+  wolfv:
+    name: Wolf Vollprecht
+    description: main author of emscripten-forge
+    avatar: https://avatars.githubusercontent.com/u/885054?v=4
+    slug: wolfv           # Author profile slug
+    url: https://prefix.dev            # Author website URL
\ No newline at end of file
diff --git a/docs/blog/posts/repack_emscripten.md b/docs/blog/posts/repack_emscripten.md
new file mode 100644
index 000000000..3332facf3
--- /dev/null
+++ b/docs/blog/posts/repack_emscripten.md
@@ -0,0 +1,15 @@
+---
+date: 2024-05-24
+category:
+    - rust
+    
+authors:
+    - derthorsten
+    - wolfv
+---
+
+# Emscripten is now a proper package
+
+So far, the emscripten package was a bit of a hack. It relied on a text file `~.emsdkdir` in the home directory which contained the directory of the emscripten installation. This was not very nice, because it was hard to build packages for several emscripten versions.
+
+But now, emscripten is a repacked package that installs emscripten into the conda environment. This allows in principle to compile packages for multiple emscripten versions.
diff --git a/docs/development/local_builds.md b/docs/development/local_builds.md
index 9c46738e4..5fba6257a 100644
--- a/docs/development/local_builds.md
+++ b/docs/development/local_builds.md
@@ -45,13 +45,13 @@ I.e. if you open a new terminal, you have to activate the environment again with
 This is only needed for MacOS. On Linux, the compiler packages are already built and available in the `emscripten-forge` channel.
 
 ```bash
-rattler-build build --recipe recipes/recipes/emscripten_emscripten-wasm32/rattler_recipe.yaml   -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
-rattler-build build --recipe recipes/recipes/cross-python_emscripten-wasm32/rattler_recipe.yaml -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
-rattler-build build --recipe recipes/recipes/pytester/rattler_recipe.yaml                       -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
+rattler-build build --recipe recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml   -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
+rattler-build build --recipe recipes/recipes/cross-python_emscripten-wasm32/recipe.yaml -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
+rattler-build build --recipe recipes/recipes/pytester/recipe.yaml                       -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
 ```
 
 ### Build packages with `rattler-build`:
 
 ```bash
-rattler-build build  --recipe recipes/recipes_emscripten/regex/rattler_recipe.yaml  --target-platform=emscripten-wasm32 -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
+rattler-build build  --recipe recipes/recipes_emscripten/regex/recipe.yaml  --target-platform=emscripten-wasm32 -c https://repo.mamba.pm/emscripten-forge -c conda-forge -c microsoft -m conda_build_config.yaml
 ```
\ No newline at end of file
diff --git a/pixi.toml b/pixi.toml
index 7b8b049d2..2ceccdc42 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -4,17 +4,7 @@ version = "0.1.0"
 description = "The emscripten-forge for emscripten-wasm32- builds."
 authors = ["DerThorsten <derthorstenbeier@gmail.com>"]
 channels = ["conda-forge"]
-platforms = ["osx-arm64", "linux-64"]
-
-############################################
-# setup-emsdk feature / tasks
-############################################
-[feature.feature_setup_emsdk]
-[feature.feature_setup_emsdk.dependencies]
-cxx-compiler = "1.5.2.*"
-[feature.feature_setup_emsdk.tasks.setup-emsdk]
-cmd = ["./emsdk/setup_emsdk.sh", "3.1.45", "$(pwd)/emscripten_forge_emsdk_install"]
-outputs = ["emscripten_forge_emsdk_install/emsdk_env.sh"]
+platforms = ["osx-arm64", "osx-64", "linux-64"]
 
 
 ############################################
@@ -40,7 +30,6 @@ cmd = [
     "--recipe",
     "recipes/recipes/emscripten_emscripten-wasm32"
 ]
-depends_on = ["setup-emsdk"] 
 
 [feature.feature_rattler_build.tasks.build-cross-python-pkg]
 cmd = [
@@ -56,7 +45,6 @@ cmd = [
     "--recipe",
     "recipes/recipes/cross-python_emscripten-wasm32"
 ]
-depends_on = ["setup-emsdk"] 
 
 [feature.feature_rattler_build.tasks.build-pytester-pkg]
 cmd = [
@@ -72,7 +60,6 @@ cmd = [
     "--recipe",
     "recipes/recipes/pytester"
 ]
-depends_on = ["setup-emsdk"] 
 
 
 [feature.feature_rattler_build.tasks.setup]
@@ -118,6 +105,5 @@ cmd = ["mkdocs", "build"]
 ############################################
 
 [environments]
-setup-emsdk-env = ["feature_setup_emsdk"]
 rattler-build-env = ["feature_rattler_build"]
-documentation-env = ["feature_documentation"]
\ No newline at end of file
+documentation-env = ["feature_documentation"]
diff --git a/recipes/recipes/emscripten_emscripten-wasm32/LICENSE b/recipes/recipes/emscripten_emscripten-wasm32/LICENSE.txt
similarity index 100%
rename from recipes/recipes/emscripten_emscripten-wasm32/LICENSE
rename to recipes/recipes/emscripten_emscripten-wasm32/LICENSE.txt
diff --git a/recipes/recipes/emscripten_emscripten-wasm32/activate.sh b/recipes/recipes/emscripten_emscripten-wasm32/activate.sh
index 8857c1794..ad0a7ed9f 100644
--- a/recipes/recipes/emscripten_emscripten-wasm32/activate.sh
+++ b/recipes/recipes/emscripten_emscripten-wasm32/activate.sh
@@ -1,4 +1,3 @@
-
 if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
 
     export CONDA_FORGE_EMSCRIPTEN_ACTIVATED=1
@@ -6,30 +5,10 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     export EMSDK_PYTHON=${BUILD_PREFIX}/bin/python3
     export PYTHON=${BUILD_PREFIX}/bin/python3
 
-
-    
-
-    CONDA_EMSDK_DIR_CONFIG_FILE=$HOME/.emsdkdir
-    if test -f "$CONDA_EMSDK_DIR_CONFIG_FILE"; then
-        echo "Found config file $CONDA_EMSDK_DIR_CONFIG_FILE"
-    else
-        # return an error
-        echo "Config file $CONDA_EMSDK_DIR_CONFIG_FILE not found"
-        return 1
-    fi
-
-
+    CONDA_EMSDK_DIR=$CONDA_PREFIX/opt/emsdk
+ 
     export EMSCRIPTEN_VERSION=$PKG_VERSION
-
-    export CONDA_EMSDK_DIR=$(<$CONDA_EMSDK_DIR_CONFIG_FILE)
     export EMSCRIPTEN_FORGE_EMSDK_DIR=$CONDA_EMSDK_DIR
-    echo "Using EMSCRIPTEN_FORGE_EMSDK_DIR $CONDA_EMSDK_DIR_CONFIG_FILE: " $EMSCRIPTEN_FORGE_EMSDK_DIR
-
-    $CONDA_EMSDK_DIR/emsdk activate --embedded --build=Release $EMSCRIPTEN_VERSION
-    
-    source $CONDA_EMSDK_DIR/emsdk_env.sh
-
-    export PATH="$CONDA_EMSDK_DIR/upstream/emscripten/":$PATH
 
     # clear all prexisting cmake args / CC / CXX / AR / RANLIB
     export CC="emcc"
@@ -39,8 +18,6 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     
     export CMAKE_ARGS=""
 
-
-
     # set the emscripten toolchain
     export CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_TOOLCHAIN_FILE=$CONDA_EMSDK_DIR/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
 
@@ -82,5 +59,4 @@ if [ -z ${CONDA_FORGE_EMSCRIPTEN_ACTIVATED+x} ]; then
     # wasm bigint
     export LDFLAGS="$LDFLAGS -sWASM_BIGINT"
 
-
 fi
diff --git a/recipes/recipes/emscripten_emscripten-wasm32/build_compiler_package.sh b/recipes/recipes/emscripten_emscripten-wasm32/build_compiler_package.sh
index 26fdde830..5365935bc 100644
--- a/recipes/recipes/emscripten_emscripten-wasm32/build_compiler_package.sh
+++ b/recipes/recipes/emscripten_emscripten-wasm32/build_compiler_package.sh
@@ -9,4 +9,31 @@ do
 done
 
 mkdir -p ${PREFIX}/bin
-cp "${PREFIX}/etc/conda/${CHANGE}.d/${PKG_NAME}_${CHANGE}.sh" ${PREFIX}/bin/activate_emscripten.sh
\ No newline at end of file
+cp "${PREFIX}/etc/conda/${CHANGE}.d/${PKG_NAME}_${CHANGE}.sh" ${PREFIX}/bin/activate_emscripten.sh
+
+export EMSDK_PYTHON=${BUILD_PREFIX}/bin/python
+
+./emsdk install $PKG_VERSION
+
+# export EMSDK=/Users/wolfv/Programs/emscripten-forge/emscripten_forge_emsdk_install
+export EMSDK=.
+
+mkdir -p $PREFIX/opt/emsdk/
+cp -r $EMSDK/upstream $PREFIX/opt/emsdk/upstream
+rm -rf $PREFIX/opt/emsdk/upstream/emscripten/test/
+
+mkdir -p $PREFIX/bin
+
+for file in $PREFIX/opt/emsdk/upstream/bin/*; do
+    echo "Linking $file"
+    ln -sf $file $PREFIX/bin/
+done
+
+for file in $PREFIX/opt/emsdk/upstream/emscripten/*; do
+  # Check if the file is executable
+  if [ -x "$file" ] && [ ! -d "$file" ]; then
+    # Create a symbolic link in the $PREFIX/bin directory
+    echo "Linking $file"
+    ln -sf $file $PREFIX/bin/
+  fi
+done
diff --git a/recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml b/recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml
index b666c2448..775f8be4e 100644
--- a/recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml
+++ b/recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml
@@ -3,23 +3,31 @@ context:
   version: 3.1.45
 
 build:
-  number: 25
+  number: 27
 
 outputs:
   - package:
       name: ${{ name|lower }}
       version: ${{ version }}
+    
+    source:
+      git: https://github.com/emscripten-core/emsdk.git
 
     build:
       script: build_compiler_package.sh
+          
+      dynamic_linking:
+        binary_relocation: false
 
     requirements:
       build:
-        - gettext
+        - curl
+        - python
       run:
         - python
+        - nodejs 16.*
       run_exports:
-          - ${{ pin_subpackage('emscripten-abi', min_pin='x.x.x', max_pin='x.x.x') }}
+        - ${{ pin_subpackage('emscripten-abi', min_pin='x.x.x', max_pin='x.x.x') }}
 
   - package:
       name: emscripten-abi
@@ -33,7 +41,7 @@ outputs:
 about:
   homepage: https://emscripten.org
   license: MIT
-  license_file: LICENSE
+  license_file: LICENSE.txt
   summary: emscripten
   description: Emscripten is a complete compiler toolchain to WebAssembly, using LLVM, with a special focus on speed, size, and the Web platform.
   documentation: https://emscripten.org/
@@ -41,3 +49,4 @@ about:
 extra:
   recipe-maintainers:
     - DerThorsten
+    - wolfv
diff --git a/recipes/recipes/emscripten_emscripten-wasm32/recipe_legacy.yaml b/recipes/recipes/emscripten_emscripten-wasm32/recipe_legacy.yaml
deleted file mode 100644
index abc302619..000000000
--- a/recipes/recipes/emscripten_emscripten-wasm32/recipe_legacy.yaml
+++ /dev/null
@@ -1,52 +0,0 @@
-context:
-  name: emscripten_emscripten-wasm32
-  version: 3.1.45
-
-package:
-  name: '{{ name|lower }}'
-  version: '{{ version }}'
-
-
-build:
-  number: 25
-
-
-outputs:
-  # TODO make run_exports work with boa
-  - package:
-      name: '{{ name | lower }}'
-      version: '{{ version }}'
-
-    build:
-      script: build_compiler_package.sh
-      run_exports:
-        strong:
-          - "{{ pin_compatible('emscripten-abi', min_pin='x.x.x', max_pin='x.x.x') }}"
-
-    requirements:
-      build:
-        - gettext
-      run:
-        - python
-
-
-  - package:
-      name: emscripten-abi
-      version: '{{ version }}'
-    build:
-      noarch: generic
-      script:
-        - echo "emscripten abi is built."
- 
-
-about:
-  home: https://emscripten.org/
-  license: MIT
-  license_file: LICENSE
-  summary: emscripten
-  description: Emscripten is a complete compiler toolchain to WebAssembly, using LLVM, with a special focus on speed, size, and the Web platform.
-  doc_url: https://emscripten.org/
-
-extra:
-  recipe-maintainers:
-    - DerThorsten
diff --git a/recipes/recipes_emscripten/freetype/recipe.yaml b/recipes/recipes_emscripten/freetype/recipe.yaml
index 5dc9b4303..3f34ab95b 100644
--- a/recipes/recipes_emscripten/freetype/recipe.yaml
+++ b/recipes/recipes_emscripten/freetype/recipe.yaml
@@ -7,7 +7,7 @@ package:
 
 source:
   url: https://download.savannah.gnu.org/releases/freetype/freetype-${{ version }}.tar.gz
-  sha256:
+  sha256: 0b109c59914f25b4411a8de2a506fdd18fa8457eb86eca6c7b15c19110a92fa5
 
 build:
   number: 0
diff --git a/recipes/recipes_emscripten/ipython/recipe.yaml b/recipes/recipes_emscripten/ipython/recipe.yaml
index b16ffd7ec..7d320cf3d 100644
--- a/recipes/recipes_emscripten/ipython/recipe.yaml
+++ b/recipes/recipes_emscripten/ipython/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 8.24.0
+  version: 8.25.0
 
 package:
   name: ipython
@@ -7,7 +7,7 @@ package:
 
 source:
 - url: https://pypi.io/packages/source/i/ipython/ipython-${{ version }}.tar.gz
-  sha256: 010db3f8a728a578bb641fdd06c063b9fb8e96a9464c63aec6310fbcb5e80501
+  sha256: c6ed726a140b6e725b911528f80439c534fac915246af3efc39440a6b0f9d716
   patches:
   - patches/0001-Patch-asyncio-tornado.patch
 
diff --git a/recipes/recipes_emscripten/lfortran/build.sh b/recipes/recipes_emscripten/lfortran/build.sh
index 4b28e7e48..fe0b7b218 100644
--- a/recipes/recipes_emscripten/lfortran/build.sh
+++ b/recipes/recipes_emscripten/lfortran/build.sh
@@ -20,4 +20,7 @@ emcmake cmake \
 emmake make -j8
 
 # Install step
-emmake make install
\ No newline at end of file
+emmake make install
+
+cp src/lfortran/tests/test_lfortran.js $PREFIX/bin/test_lfortran.js
+cp src/lfortran/tests/test_lfortran.wasm $PREFIX/bin/test_lfortran.wasm
\ No newline at end of file
diff --git a/recipes/recipes_emscripten/lfortran/recipe.yaml b/recipes/recipes_emscripten/lfortran/recipe.yaml
index 2fe7a169d..93a673a62 100644
--- a/recipes/recipes_emscripten/lfortran/recipe.yaml
+++ b/recipes/recipes_emscripten/lfortran/recipe.yaml
@@ -1,6 +1,6 @@
 context:
   name: lfortran
-  version: 0.35.0
+  version: 0.36.0
 
 package:
   name: ${{ name }}
@@ -9,10 +9,10 @@ package:
 source:
   url: https://github.com/lfortran/lfortran/releases/download/v${{ version }}/${{
     name }}-${{ version }}.tar.gz
-  sha256: 5ecc1ae03067b985943c45f6ec05e9f6e72efd6ad004b052e7a98ba552ff79b0
+  sha256: 6b3b7cb1380e96a98a9fd3166a3e7e43c3339f736f76029c246436784ffc868f
 
 build:
-  number: 2
+  number: 0
 
 requirements:
   build:
@@ -33,6 +33,14 @@ requirements:
   host:
   - zlib
 
+tests:
+- script:
+    - test -f ${PREFIX}/lib/liblfortran_runtime.a
+    - node ${PREFIX}/bin/test_lfortran.js
+  requirements:
+    build:
+      - nodejs
+
 about:
   license: BSD-3-Clause
   license_family: BSD
diff --git a/recipes/recipes_emscripten/numpy/recipe.yaml b/recipes/recipes_emscripten/numpy/recipe.yaml
index 76a1d6d95..d3e8e751d 100644
--- a/recipes/recipes_emscripten/numpy/recipe.yaml
+++ b/recipes/recipes_emscripten/numpy/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 1.26.0
+  version: 1.26.4
   cross_target_plattform: emscripten-wasm32
   target_plattform: emscripten-wasm32
 
@@ -9,7 +9,7 @@ package:
 source:
   url: https://github.com/numpy/numpy/releases/download/v${{ version }}/numpy-${{
     version }}.tar.gz
-  sha256: f93fc78fe8bf15afe2b8d6b6499f1c73953169fad1e9a8dd086cdff3190e7fdf
+  sha256: 2a02aba9ed12e4ac4eb3ea9421c420301a0c6460d9830d74a9df87efa4912010
 build:
   number: 0
 
diff --git a/recipes/recipes_emscripten/pyjs/recipe.yaml b/recipes/recipes_emscripten/pyjs/recipe.yaml
index 3f5695019..50b7c3248 100644
--- a/recipes/recipes_emscripten/pyjs/recipe.yaml
+++ b/recipes/recipes_emscripten/pyjs/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 2.0.0
+  version: 2.0.1
   name: pyjs
 package:
   name: ${{name}}
@@ -8,7 +8,7 @@ package:
 source:
 - url: 
     https://github.com/emscripten-forge/${{name}}/archive/refs/tags/${{version}}.tar.gz
-  sha256: 668f36da03ab81d35850205c47e96e1c08afc20559d72dc3c734bba2c678b826
+  sha256: 54146c30594dc1d4fccf93f4d9313bc389a488196498f99fa2eb74fa5c872dfa
 
 build:
   number: 1
diff --git a/recipes/recipes_emscripten/pytest/recipe.yaml b/recipes/recipes_emscripten/pytest/recipe.yaml
index 70909291b..be5fe78ae 100644
--- a/recipes/recipes_emscripten/pytest/recipe.yaml
+++ b/recipes/recipes_emscripten/pytest/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 8.2.1
+  version: 8.2.2
 
 package:
   name: pytest
@@ -7,7 +7,7 @@ package:
 
 source:
   url: https://pypi.io/packages/source/p/pytest/pytest-${{ version }}.tar.gz
-  sha256: 5046e5b46d8e4cac199c373041f26be56fdb81eb4e67dc11d4e10811fc3408fd
+  sha256: de4bb8104e201939ccdc688b27a89a7be2079b22e2bd2b07f806b6ba71117977
 
 build:
   number: 0
diff --git a/recipes/recipes_emscripten/pythran/recipe.yaml b/recipes/recipes_emscripten/pythran/recipe.yaml
index 877d5b36a..eac7a6fa8 100644
--- a/recipes/recipes_emscripten/pythran/recipe.yaml
+++ b/recipes/recipes_emscripten/pythran/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.16.0
+  version: 0.16.1
 
 package:
   name: pythran
@@ -7,7 +7,7 @@ package:
 
 source:
   url: https://github.com/serge-sans-paille/pythran/archive/refs/tags/${{ version}}.tar.gz
-  sha256: 56c42c745c4f253fb5053b3706345c6e111288f2f2df75e9dc265fff24e230de
+  sha256: a2510f370a7d62761844daa112a455785e5a6a216cf9ae704c3926fe68eb65ce
   patches:
     # this is necessary to fix a problem with mutable global
     # [wasm-validator error in module] unexpected true: Imported global cannot be mutable
diff --git a/recipes/recipes_emscripten/xcanvas/recipe.yaml b/recipes/recipes_emscripten/xcanvas/recipe.yaml
index 8a653d560..6a7c0a0a0 100644
--- a/recipes/recipes_emscripten/xcanvas/recipe.yaml
+++ b/recipes/recipes_emscripten/xcanvas/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.4.2
+  version: 0.5.1
 
 package:
   name: xcanvas
@@ -7,7 +7,7 @@ package:
 
 source:
   url: https://github.com/jupyter-xeus/xcanvas/archive/refs/tags/${{ version }}.tar.gz
-  sha256: 697c83f1d34577c2c121fd83a72eabba12a73c14bef72b49a30289a8db0f0a55
+  sha256: 08ca0adc86cfd4e326c0541eea293392f256d715e6ad8b143dbaf64773338f8a
 
 build:
   number: 0
@@ -18,14 +18,19 @@ requirements:
   - cmake
   - ninja
   host:
-  - xtl >=0.7,<0.8
-  - xproperty >=0.11.0,<0.12
-  - xwidgets >=0.28
+  - xproperty >=0.12.0,<0.13
+  - nlohmann_json >=3.11
+  - xwidgets >=0.29.0,<0.30
+
+tests:
+- script:
+  - test -f $PREFIX/include/xcanvas/xcanvas.hpp
+
 about:
   license: BSD-3-Clause
   license_family: BSD-3
   license_file: LICENSE
-  summary: xtl
+  summary: C++ back-end for ipycanvas
   homepage: https://github.com/jupyter-xeus/xcanvas
 extra:
   recipe-maintainers:
diff --git a/recipes/recipes_emscripten/xeus-cpp/recipe.yaml b/recipes/recipes_emscripten/xeus-cpp/recipe.yaml
index c8e887fb7..9c8eaca21 100644
--- a/recipes/recipes_emscripten/xeus-cpp/recipe.yaml
+++ b/recipes/recipes_emscripten/xeus-cpp/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.4.0
+  version: 0.5.0
 
 package:
   name: xeus-cpp
@@ -7,10 +7,10 @@ package:
 
 source:
   url: https://github.com/compiler-research/xeus-cpp/archive/refs/tags/${{ version }}.tar.gz
-  sha256: 28b07534ff322ebe17fab1997cdf60d0fb811ee1d7fd518742a5d0d157e70e25
+  sha256: 352400083227e3ef8f747ddaffe37ca19af6cd760254cb033114ea6027929aec
 
 build:
-  number: 1
+  number: 0
 
 requirements:
   build:
@@ -19,21 +19,19 @@ requirements:
     - make  # [unix]
   host:
     - nlohmann_json
-    - xeus-lite <2.0
-    - xeus >=3.0.5,<4.0
-    - xtl >=0.7,<0.8
+    - xeus-lite >=3.0.0,<4.0
+    - xeus >=5.0.0,<6.0
     - cpp-argparse
     - pugixml
     - CppInterOp
 
-
 tests:
   - script:
     - test -f $PREFIX/bin/xcpp.wasm
     - test -f $PREFIX/bin/xcpp.js
-    - test -f $PREFIX/share/jupyter/kernels/xcpp/kernel.json
-    - test -f $PREFIX/share/jupyter/kernels/xcpp/logo-32x32.png
-    - test -f $PREFIX/share/jupyter/kernels/xcpp/logo-64x64.png
+    - test -f $PREFIX/share/jupyter/kernels/xcpp17/kernel.json
+    - test -f $PREFIX/share/jupyter/kernels/xcpp17/logo-32x32.png
+    - test -f $PREFIX/share/jupyter/kernels/xcpp17/logo-64x64.png
 
 about:
   license: BSD-3-Clause
diff --git a/recipes/recipes_emscripten/xeus-javascript/recipe.yaml b/recipes/recipes_emscripten/xeus-javascript/recipe.yaml
index 0a4455552..ddfa22e25 100644
--- a/recipes/recipes_emscripten/xeus-javascript/recipe.yaml
+++ b/recipes/recipes_emscripten/xeus-javascript/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.3.4
+  version: 0.4.0
 
 package:
   name: xeus-javascript
@@ -8,7 +8,7 @@ package:
 source:
   url: https://github.com/jupyter-xeus/xeus-javascript/archive/refs/tags/${{ version
     }}.tar.gz
-  sha256: 36d126af36dce3d3912776cb979e50cd66a819f370a930c075e0c6e743caae3e
+  sha256: d65edb4ce21aa066b08e091efed77c33b7911929075251afe195adef296afb79
 
 build:
   number: 0
@@ -20,9 +20,9 @@ requirements:
   - ninja
   host:
   - nlohmann_json
-  - xeus-lite >=2.0.0
-  - xeus >=4.0.2,<5.0
-  - xtl >=0.7
+  - xeus-lite >=3.0.0,<4.0
+  - xeus >=5.0.0,<6.0
+
 
 tests:
 - script:
diff --git a/recipes/recipes_emscripten/xeus-lite/recipe.yaml b/recipes/recipes_emscripten/xeus-lite/recipe.yaml
index 69e72fc52..1efe83685 100644
--- a/recipes/recipes_emscripten/xeus-lite/recipe.yaml
+++ b/recipes/recipes_emscripten/xeus-lite/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 2.0.0
+  version: 3.0.0
 
 package:
   name: xeus-lite
@@ -7,10 +7,10 @@ package:
 
 source:
   url: https://github.com/jupyter-xeus/xeus-lite/archive/refs/tags/${{ version }}.tar.gz
-  sha256: 852acd70d80b3b92f934f0a089bfd73766311c34527b90c6ec04583b8ad1ff29
+  sha256: e4ee23a6db767066b4be7dcea071585b1b43fae2fd33f626f7f25345b5ec3dca
 
 build:
-  number: 0
+  number: 1
 
 requirements:
   build:
@@ -19,8 +19,7 @@ requirements:
   - ninja
   host:
   - nlohmann_json
-  - xtl
-  - xeus >=4.0.1
+  - xeus >=5.0.0
 
 about:
   license: BSD-3-Clause
diff --git a/recipes/recipes_emscripten/xeus/recipe.yaml b/recipes/recipes_emscripten/xeus/recipe.yaml
index 3f6cd929c..40498f0fe 100644
--- a/recipes/recipes_emscripten/xeus/recipe.yaml
+++ b/recipes/recipes_emscripten/xeus/recipe.yaml
@@ -1,6 +1,6 @@
 context:
 
-  version: 4.0.3
+  version: 5.1.0
 
 
 package:
@@ -9,7 +9,7 @@ package:
 
 source:
   url: https://github.com/jupyter-xeus/xeus/archive/refs/tags/${{ version }}.tar.gz
-  sha256: 67ca4c714f4157cd2b5ff99750b234f7c7b72b6baec0b878d8724b5ce14ba663
+  sha256: ff8f854ac5771bc43bd1f5fce45056c0881bfc1e489b59001655d338ecef8ec9
 
 build:
   number: 0
@@ -21,7 +21,6 @@ requirements:
   - ninja
   host:
   - nlohmann_json
-  - xtl
 
 tests:
 - script:
diff --git a/recipes/recipes_emscripten/xproperty/recipe.yaml b/recipes/recipes_emscripten/xproperty/recipe.yaml
index c4ef26d09..86a0dbc2f 100644
--- a/recipes/recipes_emscripten/xproperty/recipe.yaml
+++ b/recipes/recipes_emscripten/xproperty/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.11.0
+  version: 0.12.0
 
 package:
   name: xproperty
@@ -7,10 +7,10 @@ package:
 
 source:
   url: https://github.com/jupyter-xeus/xproperty/archive/refs/tags/${{ version }}.tar.gz
-  sha256: bf86a11c6758308aa0aa0f64d8dd24cd3e9d78378467b74002f552bfb75fc0eb
+  sha256: 27cbc8e441dcc515a1ebbf11bad5ef240748d32f5e1adf84deed87a1dc57a440
 
 build:
-  number: 2
+  number: 0
 
 requirements:
   build:
@@ -18,15 +18,19 @@ requirements:
   - cmake
   - ninja
   host:
-  - xtl >=0.7,<0.8
+  - nlohmann_json >=3.11.2
   run:
-  - xtl >=0.7,<0.8
+  - nlohmann_json >=3.11.2
+
+tests:
+- script:
+    - test -f $PREFIX/include/xproperty/xproperty.hpp
 
 about:
   license: BSD-3-Clause
   license_family: BSD-3
   license_file: LICENSE
-  summary: xtl
+  summary: Traitlets-like C++ properties and implementation of the observer pattern
   homepage: https://github.com/jupyter-xeus/xproperty
 extra:
   recipe-maintainers:
diff --git a/recipes/recipes_emscripten/xwidgets/recipe.yaml b/recipes/recipes_emscripten/xwidgets/recipe.yaml
index 9a78f328a..c7c4edac6 100644
--- a/recipes/recipes_emscripten/xwidgets/recipe.yaml
+++ b/recipes/recipes_emscripten/xwidgets/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 0.28.1
+  version: 0.29.0
 
 package:
   name: xwidgets
@@ -7,7 +7,7 @@ package:
 
 source:
   url: https://github.com/jupyter-xeus/xwidgets/archive/refs/tags/${{ version }}.tar.gz
-  sha256: ef399a813543e83180b3c4eeaac6d7c6baef94f9911bb74a0ebf2cfc98568ca0
+  sha256: 07c789b7936b19a123f37ac1edfd0598a89f23e02d4eeffc9976817be68bee42
 
 build:
   number: 0
@@ -18,21 +18,25 @@ requirements:
   - cmake
   - ninja
   host:
-  - xtl >=0.7,<0.8
-  - nlohmann_json
-  - xeus >=3.0,<4.0
-  - xproperty >=0.11.0,<0.12
+  - nlohmann_json >=3.11
+  - xeus >=5,<6
+  - xproperty >=0.12.0,<0.13
   run:
-  - xtl >=0.7,<0.8
-  - nlohmann_json
-  - xeus >=3.0,<4.0
-  - xproperty >=0.11.0,<0.12
+  - nlohmann_json >=3.11
+  - xeus >=5,<6
+  - xproperty >=0.12.0,<0.13
+
+tests:
+- script:
+    - test -d $PREFIX/include/xwidgets
+    - test -f $PREFIX/include/xwidgets/xtransport.hpp
+    - test -f $PREFIX/lib/libxwidgets.a
 
 about:
   license: BSD-3-Clause
   license_family: BSD-3
   license_file: LICENSE
-  summary: xtl
+  summary: C++ backend for Jupyter interactive widgets
   homepage: https://github.com/jupyter-xeus/xwidgets
 extra:
   recipe-maintainers:
diff --git a/recipes/recipes_emscripten/xxhash/build.sh b/recipes/recipes_emscripten/xxhash/build.sh
new file mode 100644
index 000000000..1a72bae7e
--- /dev/null
+++ b/recipes/recipes_emscripten/xxhash/build.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+# Build step
+emmake make install -j8
+
diff --git a/recipes/recipes_emscripten/xxhash/recipe.yaml b/recipes/recipes_emscripten/xxhash/recipe.yaml
new file mode 100644
index 000000000..1e25ce4c2
--- /dev/null
+++ b/recipes/recipes_emscripten/xxhash/recipe.yaml
@@ -0,0 +1,42 @@
+context:
+  name: xxhash
+  version: 0.8.2
+
+package:
+  name: ${{ name|lower }}
+  version: ${{ version }}
+
+source:
+  url: https://github.com/Cyan4973/${{ name }}/archive/v${{ version }}.tar.gz
+  sha256: baee0c6afd4f03165de7a4e67988d16f0f2b257b51d0e3cb91909302a26a79c4
+
+build:
+  number: 0
+
+requirements:
+  build:
+    - ${{ compiler('c') }}
+    - make
+    - cmake
+
+tests:
+- script:
+    - test -f ${PREFIX}/lib/libxxhash.a
+    - test -f ${PREFIX}/include/xxhash.h
+
+about:
+  homepage: http://www.xxhash.com/
+  license: BSD-2-Clause
+  license_file: LICENSE
+  summary: Extremely fast hash algorithm
+  description: |
+    xxHash is an Extremely fast Hash algorithm, running at RAM speed limits. It
+    successfully completes the SMHasher test suite which evaluates collision,
+    dispersion and randomness qualities of hash functions. Code is highly
+    portable, and hashes are identical on all platforms (little / big endian).
+  repository: https://github.com/Cyan4973/xxHash
+  documentation: https://github.com/Cyan4973/xxHash
+
+extra:
+  recipe-maintainers:
+    - KGB99
diff --git a/recipes/recipes_emscripten/xz/build.sh b/recipes/recipes_emscripten/xz/build.sh
index 02fc2644f..214211113 100644
--- a/recipes/recipes_emscripten/xz/build.sh
+++ b/recipes/recipes_emscripten/xz/build.sh
@@ -6,4 +6,7 @@ emconfigure ../configure \
     --enable-threads=no \
     --prefix=$PREFIX
 
-emmake make install
\ No newline at end of file
+emmake make install
+
+# Copy .wasm file also
+cp src/xz/xz.wasm $PREFIX/bin/
diff --git a/recipes/recipes_emscripten/xz/recipe.yaml b/recipes/recipes_emscripten/xz/recipe.yaml
index 0f361eb7d..597bf8243 100644
--- a/recipes/recipes_emscripten/xz/recipe.yaml
+++ b/recipes/recipes_emscripten/xz/recipe.yaml
@@ -1,5 +1,5 @@
 context:
-  version: 5.2.10
+  version: 5.2.11
 
 package:
   name: xz
@@ -7,7 +7,7 @@ package:
 
 source:
   url: http://downloads.sourceforge.net/project/lzmautils/xz-${{ version }}.tar.bz2
-  sha256: 01b71df61521d9da698ce3c33148bff06a131628ff037398c09482f3a26e5408
+  sha256: 7859c47a5e909299e77d0e87e2bafc52fb1d09e35abac48b6426c1be213c5b37
 
 build:
   number: 0
@@ -19,6 +19,15 @@ requirements:
   - automake
   - libtool
 
+tests:
+- script:
+    - test -f $PREFIX/lib/liblzma.a
+    - test -f $PREFIX/include/lzma.h
+    - node $PREFIX/bin/xz --version
+  requirements:
+    build:
+      - nodejs
+
 about:
   homepage: http://tukaani.org/xz/
   license: LGPL-2.1 AND GPL-2.0