diff --git a/libs/redmine-types/index.d.ts b/libs/redmine-types/index.d.ts
index 589cbe6..b0a4bdd 100644
--- a/libs/redmine-types/index.d.ts
+++ b/libs/redmine-types/index.d.ts
@@ -48,6 +48,7 @@ export module RedmineTypes {
     updated_on?: string;
     closed_on?: string;
     relations?: Record<string, any>[];
+    journals?: Journal.Item[];
   };
 
   // eslint-disable-next-line @typescript-eslint/prefer-namespace-keyword
@@ -94,4 +95,22 @@ export module RedmineTypes {
     lastname: string;
     mail: string;
   };
+
+  // eslint-disable-next-line @typescript-eslint/prefer-namespace-keyword
+  export module Journal {
+    export type Item = {
+      id: number;
+      user: IdAndName;
+      notes: string;
+      created_on: string;
+      details?: Detail[];
+    };
+
+    export type Detail = {
+      property: string;
+      name: string;
+      new_value?: string;
+      old_value?: string;
+    };
+  }
 }