diff --git a/docs/ecosystem/implementations.md b/docs/ecosystem/implementations.md
index 9f5fc31..e76b7e8 100644
--- a/docs/ecosystem/implementations.md
+++ b/docs/ecosystem/implementations.md
@@ -30,6 +30,7 @@ Community members have created implementations in additional languages:
 | Language | Repository | Maintainer |
 |----------|------------|------------|
 | **Apex** | [ApexToon](https://github.com/Eacaw/ApexToon) | [@Eacaw](https://github.com/Eacaw) |
+| **C** | [TOONc](https://github.com/UsboKirishima/TOONc) | [@UsboKirishima](https://github.com/UsboKirishima) |
 | **C++** | [ctoon](https://github.com/mohammadraziei/ctoon) | [@mohammadraziei](https://github.com/mohammadraziei) |
 | **Clojure** | [toon](https://github.com/vadelabs/toon) | [@vadelabs](https://github.com/vadelabs) |
 | **Crystal** | [toon-crystal](https://github.com/mamantoha/toon-crystal) | [@mamantoha](https://github.com/mamantoha) |
diff --git a/packages/toon/README.md b/packages/toon/README.md
index fdfef73..40136bd 100644
--- a/packages/toon/README.md
+++ b/packages/toon/README.md
@@ -929,6 +929,7 @@ Comprehensive guides, references, and resources to help you get the most out of
 ### Community Implementations
 
 - **Apex:** [ApexToon](https://github.com/Eacaw/ApexToon)
+- **C:** [TOONc](https://github.com/UsboKirishima/TOONc)
 - **C++:** [ctoon](https://github.com/mohammadraziei/ctoon)
 - **Clojure:** [toon](https://github.com/vadelabs/toon)
 - **Crystal:** [toon-crystal](https://github.com/mamantoha/toon-crystal)