diff --git a/conda/Makefile b/conda/Makefile
index 3264931339..c4cb211f1f 100644
--- a/conda/Makefile
+++ b/conda/Makefile
@@ -1,11 +1,8 @@
 compile:
-	conda activate conda-build && conda-build -c conda-forge . --keep-old-work --python 3.10.4
+	conda activate conda-build && conda-build -c conda-forge . --keep-old-work --python 3.10.5
 
 debug:
 	conda activate conda-build && conda-debug -c conda-forge . --python 3.10.4
 
-install:
-	conda env create -f environment.yml
-
-update:
-	conda env update -n conda-build --file environment.yml --prune
\ No newline at end of file
+env:
+	conda env update --f environment.yml --prune
\ No newline at end of file
diff --git a/conda/bld.bat b/conda/bld.bat
index 0cdccf2367..b25f46c9d6 100644
--- a/conda/bld.bat
+++ b/conda/bld.bat
@@ -11,6 +11,7 @@ cmake -G "Ninja" ^
  -D OCC_INCLUDE_DIR:FILEPATH="%LIBRARY_PREFIX%\include\opencascade" ^
  -D OCC_LIBRARY_DIR:FILEPATH="%LIBRARY_PREFIX%\lib" ^
  -D CGAL_INCLUDE_DIR:FILEPATH="%LIBRARY_PREFIX%\include" ^
+ -D GMP_INCLUDE_DIR:FILEPATH="%LIBRARY_PREFIX%\include" ^
  -D GMP_LIBRARY_DIR:FILEPATH="%LIBRARY_PREFIX%\lib" ^
  -D MPFR_LIBRARY_DIR:FILEPATH="%LIBRARY_PREFIX%\lib" ^
  -D COLLADA_SUPPORT=OFF ^
@@ -30,10 +31,11 @@ cmake -G "Ninja" ^
  -D BUILD_CONVERT:BOOL=ON ^
  -D BUILD_IFCMAX:BOOL=OFF ^
  -D IFCXML_SUPPORT:BOOL=ON ^
- -D BOOST_LIBRARYDIR:FILEPATH="%LIBRARY_PREFIX%\lib" ^
- -D BOOST_INCLUDEDIR:FILEPATH="%LIBRARY_PREFIX%\include" ^
- -D BOOST_USE_STATIC_LIBS:BOOL=OFF ^
+ -D Boost_LIBRARYDIR:FILEPATH="%LIBRARY_PREFIX%\lib" ^
+ -D Boost_INCLUDEDIR:FILEPATH="%LIBRARY_PREFIX%\include" ^
+ -D Boost_USE_STATIC_LIBS:BOOL=OFF ^
  %SRC_DIR%/cmake
+
 if errorlevel 1 exit 1
 
 :: Build and install
diff --git a/conda/meta.yaml b/conda/meta.yaml
index 6142a14bb2..942a7c675a 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -24,46 +24,31 @@ requirements:
 
   host:
     - python
-    - occt >={{ occt_version }}
-    - hdf5 >={{ hdf5_version }}
-    - cgal-cpp >={{ cgal_cpp_version }}
-    - nlohmann_json
+    - boost-cpp <=1.74.0
+    - occt
     - libxml2
+    - cgal-cpp
+    - hdf5
+    - mpfr
+    - gmp  # [unix]
+    - mpir  # [win]
+    - nlohmann_json
 
   run:
     - python
-    - occt >={{ occt_version }}
-    - cgal-cpp >={{ cgal_cpp_version }}
-    - hdf5 >={{ hdf5_version }}
-    - lark-parser
-    - deepdiff
-    - requests
+    - boost-cpp <=1.74.0
+    - occt
+    - libxml2
+    - cgal-cpp
+    - hdf5
+    - mpfr
+    - gmp  # [unix]
+    - mpir  # [win]
     - nlohmann_json
-    - isodate
-    - numpy >=1.17
 
 test:
   imports:
     - ifcopenshell
-  requires:
-    - pytest
-    - pytest-cov
-    - numpy
-    - lxml
-    - isodate
-    - lark
-    - networkx
-    - xmlschema
-  #source_files:
-  #  - src/ifcopenshell-python/test/api
-  #  - src/ifcopenshell-python/test/util
-  #  - src/ifcopenshell-python/test/bootstrap.py
-  #  - src/ifcopenshell-python/test/test_file.py
-  #  - src/ifcopenshell-python/test/test_wall_opening.py
-  #  - src/ifcopenshell-python/test/__init__.py
-  #commands:
-  #  #- pip install bcf-client
-  #  - cd ../src/ifcopenshell-python/test && pytest -p no:pytest-blender
 
 about:
   home: http://ifcopenshell.org