diff --git a/convert_case-fix-metadata.diff b/convert_case-fix-metadata.diff
new file mode 100644
index 0000000..2bee3e4
--- /dev/null
+++ b/convert_case-fix-metadata.diff
@@ -0,0 +1,15 @@
+--- convert_case-0.4.0/Cargo.toml	2020-05-18T02:16:34+00:00
++++ convert_case-0.4.0/Cargo.toml	2021-06-17T16:20:11.471912+00:00
+@@ -29,10 +29,10 @@
+ version = "^0.7"
+ optional = true
+ [dev-dependencies.strum]
+-version = "0.18.0"
++version = "0.21.0"
+ 
+ [dev-dependencies.strum_macros]
+-version = "0.18.0"
++version = "0.21.0"
+ 
+ [features]
+ random = ["rand"]
diff --git a/rust-convert_case.spec b/rust-convert_case.spec
index 54b0bb0..cd43564 100644
--- a/rust-convert_case.spec
+++ b/rust-convert_case.spec
@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.4.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Convert strings into any case
 
 # Upstream license specification: MIT
@@ -14,6 +14,9 @@ Summary:        Convert strings into any case
 License:        MIT
 URL:            https://crates.io/crates/convert_case
 Source:         %{crates_source}
+# Initial patched metadata
+# - Bump strum and strum_macros to 0.21.0 https://github.com/rutrum/convert-case/pull/3
+Patch0:         convert_case-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 %if %{__cargo_skip_build}
@@ -95,5 +98,8 @@ which use "random" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Thu Jun 17 2021 Robert-André Mauchin <zebob.m@gmail.com> - 0.4.0-2
+- Bump strum and strum_macros to 0.21.0
+
 * Mon May 10 2021 Fabio Valentini <decathorpe@gmail.com> - 0.4.0-1
 - Initial package