diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 33df45f29..41649c9ab 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: install-dependencies
-      run: sudo apt-get update && sudo apt-get install ninja-build libboost-dev libboost-date-time-dev libboost-system-dev libboost-filesystem-dev libboost-thread-dev libboost-chrono-dev libboost-serialization-dev liblog4cpp5-dev gnuradio-dev gr-osmosdr libpugixml-dev libpcap-dev libblas-dev liblapack-dev libarmadillo-dev libgflags-dev libgoogle-glog-dev libgnutls-openssl-dev python-mako python-six libmatio-dev googletest protobuf-compiler libprotobuf-dev
+      run: sudo apt-get update && sudo apt-get install ninja-build libboost-dev libboost-date-time-dev libboost-system-dev libboost-filesystem-dev libboost-thread-dev libboost-chrono-dev libboost-serialization-dev liblog4cpp5-dev gnuradio-dev gr-osmosdr libpugixml-dev libpcap-dev libblas-dev liblapack-dev libarmadillo-dev libgflags-dev libgoogle-glog-dev libgnutls-openssl-dev libmatio-dev googletest protobuf-compiler libprotobuf-dev python3-mako python3-six
     - name: configure
       run: cd build && cmake -GNinja ..
     - name: build
diff --git a/cmake/Modules/SetupPython.cmake b/cmake/Modules/SetupPython.cmake
index 63fb724e0..c6647a803 100644
--- a/cmake/Modules/SetupPython.cmake
+++ b/cmake/Modules/SetupPython.cmake
@@ -72,7 +72,8 @@ if(CMAKE_VERSION VERSION_LESS 3.12)
         gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
     else()
         message(STATUS "PYTHON_EXECUTABLE not set - trying by default python3")
-        message(STATUS "Use -DPYTHON_EXECUTABLE=/path/to/python2.7 to build for python 2.7")
+        message(STATUS "Use -DPYTHON_EXECUTABLE=/path/to/python to build for python 2.7")
+        set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7 3.8 3.9)
         find_package(PythonInterp ${GNSSSDR_PYTHON_MIN3_VERSION})
         if(NOT PYTHONINTERP_FOUND)
             message(STATUS "python3 not found - trying with python2.7")
diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/VolkPython.cmake b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/VolkPython.cmake
index 6c9b2667d..e3df8cd8d 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/VolkPython.cmake
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/VolkPython.cmake
@@ -71,6 +71,7 @@ if(CMAKE_VERSION VERSION_LESS 3.12)
     else()
         message(STATUS "PYTHON_EXECUTABLE not set - trying by default python3")
         message(STATUS "Use -DPYTHON_EXECUTABLE=/path/to/python to build for python 2.7")
+        set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7 3.8 3.9)
         find_package(PythonInterp ${VOLK_PYTHON_MIN3_VERSION})
         if(NOT PYTHONINTERP_FOUND)
             message(STATUS "python3 not found - trying with python2.7")