diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 59c1c72..29d484b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,6 +20,7 @@ jobs:
             sudo apt-add-repository ppa:ubuntu-toolchain-r/test
             sudo apt-get update
             sudo apt-get install libboost-test-dev
+            sudo apt-get install language-pack-fr # test serializer w/ locale
             sudo apt-get install ${{ matrix.compiler }}
       - name: Configure
         run: |
@@ -48,6 +49,7 @@ jobs:
             sudo apt-add-repository ppa:ubuntu-toolchain-r/test
             sudo apt-get update
             sudo apt-get install libboost-test-dev
+            sudo apt-get install language-pack-fr # test serializer w/ locale
             sudo apt-get install clang-${{ matrix.compiler }}
       - name: Configure
         run: |
@@ -80,6 +82,7 @@ jobs:
             sudo apt-add-repository ppa:mhier/libboost-latest
             sudo apt-get update
             sudo apt-get install boost1.70
+            sudo apt-get install language-pack-fr # test serializer w/ locale
             sudo apt-get install ${{ matrix.compiler }}
       - name: Configure
         run: |
@@ -119,6 +122,7 @@ jobs:
             sudo apt-add-repository ppa:mhier/libboost-latest
             sudo apt-get update
             sudo apt-get install boost1.70
+            sudo apt-get install language-pack-fr # test serializer w/ locale
             sudo apt-get install clang-${{ matrix.compiler }}
       - name: Configure
         run: |
@@ -216,7 +220,6 @@ jobs:
       - name: Test
         working-directory: ./build
         run: |
-            ./tests/test_literals --log_level=all
             file --mime-encoding tests/toml/tests/example.toml
             file --mime-encoding tests/toml/tests/fruit.toml
             file --mime-encoding tests/toml/tests/hard_example.toml
diff --git a/tests/test_serialize_file.cpp b/tests/test_serialize_file.cpp
index 0bc7ef1..40cb484 100644
--- a/tests/test_serialize_file.cpp
+++ b/tests/test_serialize_file.cpp
@@ -375,6 +375,11 @@ BOOST_AUTO_TEST_CASE(test_serialize_under_locale)
     {
         setloc = std::string(try_nohyphen);
     }
+    // In some envs, fr_FR locale has not been installed. Tests must work even in such a case.
+//     else
+//     {
+//         BOOST_TEST(false);
+//     }
     BOOST_TEST_MESSAGE("current locale at the beginning of the test = " << setloc);
 
     const std::string str = R"(