diff --git a/package.json b/package.json
index c02ce03..73d31b8 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
         "prepare": "npm run build"
     },
     "dependencies": {
-        "@tribufu/mintaka": "0.1.2",
+        "@tribufu/mintaka": "0.1.3",
         "axios": "^1.6.3",
         "camelcase-keys": "^9.1.2",
         "fp-ts": "^2.16.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 04484ff..01b012c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -6,8 +6,8 @@ settings:
 
 dependencies:
   '@tribufu/mintaka':
-    specifier: 0.1.2
-    version: 0.1.2
+    specifier: 0.1.3
+    version: 0.1.3
   axios:
     specifier: ^1.6.3
     version: 1.6.4
@@ -290,8 +290,8 @@ packages:
     dev: true
     optional: true
 
-  /@tribufu/mintaka@0.1.2:
-    resolution: {integrity: sha512-S6bEYchoI/Y2K803DMUW75kW3FycQCrJO2P4e+S8w1G/7gXRm+d2cvUplZLgtGVC2/X7NYrWRs5Yw6CWmjPDGQ==}
+  /@tribufu/mintaka@0.1.3:
+    resolution: {integrity: sha512-MMv0saUpDt4MxUW5cD7y9UlOvF10Qv010dgzOkMxrh2/FmCg/KjfVviPGQLRp54IHZQWTSMdGPHX/4x/G/5CZQ==}
     dependencies:
       axios: 1.6.4
       camelcase-keys: 9.1.2
diff --git a/src/client.ts b/src/client.ts
index 5ad0a3e..3d076a4 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -103,7 +103,7 @@ export class TribufuClient extends TribufuApi {
      * @param tokens
      */
     private setTokensFromResponse(tokens: OAuth2TokenResponse): void {
-        this.setTokens(tokens.accessToken, tokens.refreshToken || null, tokens.expiresIn || null);
+        this.setTokens(tokens.access_token, tokens.refresh_token || null, tokens.expires_in || null);
     }
 
     /**
@@ -245,7 +245,7 @@ export class TribufuClient extends TribufuApi {
 
         const requestBody: OAuth2IntrospectionRequest = {
             token: this.options.accessToken,
-            tokenTypeHint: "access_token",
+            token_type_hint: "access_token",
         }
 
         const url = `/v1/oauth2/introspect`;
@@ -270,7 +270,7 @@ export class TribufuClient extends TribufuApi {
 
         const requestBody: OAuth2IntrospectionRequest = {
             token: this.options.refreshToken,
-            tokenTypeHint: "refresh_token",
+            token_type_hint: "refresh_token",
         }
 
         const url = `/v1/oauth2/revoke`;
@@ -310,14 +310,14 @@ export class TribufuClient extends TribufuApi {
      */
     protected async getToken(grantType: OAuth2GrantType, grantValue: string | null, subjectKey: string | null, subjectValue: string | null): Promise<OAuth2TokenResponse | null> {
         const requestBody: OAuth2TokenRequest = {
-            grantType: grantType,
+            grant_type: grantType,
             code: grantType === "authorization_code" ? grantValue : null,
-            refreshToken: grantType === "refresh_token" ? grantValue : null,
+            refresh_token: grantType === "refresh_token" ? grantValue : null,
             username: grantType === "password" || grantType === "passkey" ? subjectValue : null,
             password: grantType === "password" ? grantValue : null,
             passkey: grantType === "passkey" ? grantValue : null,
-            clientId: this.clientId,
-            clientSecret: this.clientSecret,
+            client_id: this.clientId,
+            client_secret: this.clientSecret,
         }
 
         const params = subjectKey && subjectValue ? `?${subjectKey}=${subjectValue}` : "";