diff --git a/conanfile.py b/conanfile.py
index bf30dbf1..4a910ce5 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -46,7 +46,7 @@ class UnitsConan(ConanFile):
     url = "https://github.com/mpusz/units"
     settings = "compiler", "build_type"
     requires = (
-        "fmt/7.0.3",
+        "fmt/7.1.3",
         "gsl-lite/0.37.0"
     )
     options = {
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 404beade..f670cd84 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -21,6 +21,7 @@
   - (!) build: `-g cmake_paths` has to be manually provided for `conan install` command (workaround for a Conan bug)
   - build: doxygen updated to 1.8.20
   - build: catch2 updated to 2.13.4
+  - build: fmt updated to 7.1.3
   - build: Conan generator switched to `cmake_find_package_multi`
   - build: Conan CMakeToolchain support added
   - build: CMake scripts cleanup
diff --git a/src/include/units/format.h b/src/include/units/format.h
index f6c37ef4..c8f432cc 100644
--- a/src/include/units/format.h
+++ b/src/include/units/format.h
@@ -88,7 +88,7 @@ namespace units {
     template <typename CharT>
     struct global_format_specs
     {
-      fmt::detail::fill_t<CharT> fill = fmt::detail::fill_t<CharT>::make();
+      fmt::detail::fill_t<CharT> fill;
       fmt::align_t align = fmt::align_t::none;
       int width = 0;
     };