diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 071bc7d..01a3377 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -122,8 +122,6 @@ jobs:
           set -ex
           sudo apt-get update
           sudo apt-get install -y python3-numpy cython3 python3-pytest
-          sudo ln -s /usr/bin/cython3 /usr/bin/cython
-          sudo ln -s /usr/bin/pytest-3 /usr/bin/pytest
 
       - name: Build dftatom cmake python
         run: |
diff --git a/cmake/FindNumPy.cmake b/cmake/FindNumPy.cmake
index 2613bf1..8e15ab5 100644
--- a/cmake/FindNumPy.cmake
+++ b/cmake/FindNumPy.cmake
@@ -1,5 +1,7 @@
+find_package(Python3 REQUIRED COMPONENTS Interpreter)
+
 execute_process(
-	COMMAND python -c "import numpy; print(numpy.get_include())"
+	COMMAND ${Python3_EXECUTABLE} -c "import numpy; print(numpy.get_include())"
 	OUTPUT_VARIABLE PYTHON_SYS_PATH
 	)
 string(STRIP ${PYTHON_SYS_PATH} PYTHON_SYS_PATH)
diff --git a/cmake/FindPython.cmake b/cmake/FindPython.cmake
index 989c4ea..91559f6 100644
--- a/cmake/FindPython.cmake
+++ b/cmake/FindPython.cmake
@@ -1,5 +1,7 @@
+find_package(Python3 REQUIRED COMPONENTS Interpreter)
+
 execute_process(
-	COMMAND python -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())"
+	COMMAND ${Python3_EXECUTABLE} -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())"
 	OUTPUT_VARIABLE PYTHON_SYS_PATH
 	)
 string(STRIP ${PYTHON_SYS_PATH} PYTHON_SYS_PATH)
@@ -10,13 +12,13 @@ FIND_PATH(PYTHON_INCLUDE_PATH Python.h
     )
 
 execute_process(
-	COMMAND python -c "from distutils.sysconfig import get_config_var; print(get_config_var('LIBDIR'))"
+	COMMAND ${Python3_EXECUTABLE} -c "from distutils.sysconfig import get_config_var; print(get_config_var('LIBDIR'))"
 	OUTPUT_VARIABLE PYTHON_LIB_PATH
 	)
 string(STRIP ${PYTHON_LIB_PATH} PYTHON_LIB_PATH)
 
 execute_process(
-	COMMAND python -c "import sys; print('%s.%s' % sys.version_info[:2])"
+	COMMAND ${Python3_EXECUTABLE} -c "import sys; print('%s.%s' % sys.version_info[:2])"
     OUTPUT_VARIABLE PYTHON_VERSION
 	)
 string(STRIP ${PYTHON_VERSION} PYTHON_VERSION)
@@ -29,7 +31,7 @@ FIND_LIBRARY(PYTHON_LIBRARY NAMES python${PYTHON_VERSION}
     )
 
 execute_process(
-	COMMAND python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
+	COMMAND ${Python3_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
 	OUTPUT_VARIABLE PYTHON_INSTALL_PATH_tmp
 	)
 string(STRIP ${PYTHON_INSTALL_PATH_tmp} PYTHON_INSTALL_PATH_tmp)