diff --git a/.changeset/wise-bugs-admire.md b/.changeset/wise-bugs-admire.md
new file mode 100644
index 000000000..d800799e1
--- /dev/null
+++ b/.changeset/wise-bugs-admire.md
@@ -0,0 +1,6 @@
+---
+"lingo.dev": patch
+"@lingo.dev/_sdk": patch
+---
+
+set utf-8 encoding explicitly
diff --git a/packages/sdk/src/index.ts b/packages/sdk/src/index.ts
index ff4779e1f..529364f50 100644
--- a/packages/sdk/src/index.ts
+++ b/packages/sdk/src/index.ts
@@ -100,7 +100,7 @@ export class ReplexicaEngine {
     const res = await fetch(`${this.config.apiUrl}/i18n`, {
       method: "POST",
       headers: {
-        "Content-Type": "application/json",
+        "Content-Type": "application/json; charset=utf-8",
         Authorization: `Bearer ${this.config.apiKey}`,
       },
       body: JSON.stringify(
@@ -414,7 +414,7 @@ export class ReplexicaEngine {
     const response = await fetch(`${this.config.apiUrl}/recognize`, {
       method: "POST",
       headers: {
-        "Content-Type": "application/json",
+        "Content-Type": "application/json; charset=utf-8",
         Authorization: `Bearer ${this.config.apiKey}`,
       },
       body: JSON.stringify({ text }),