diff --git a/packages/@o3r/artifactory-tools/src/cli/pr-artifact-cleaner.ts b/packages/@o3r/artifactory-tools/src/cli/pr-artifact-cleaner.ts
index 3d65127c19..02c40c1328 100644
--- a/packages/@o3r/artifactory-tools/src/cli/pr-artifact-cleaner.ts
+++ b/packages/@o3r/artifactory-tools/src/cli/pr-artifact-cleaner.ts
@@ -28,7 +28,7 @@ const winstonOptions = {
           info.message = JSON.stringify(info.message, null, 3);
         }
 
-        return info.message;
+        return info.message as string;
       })
     )
   }
diff --git a/packages/@o3r/dev-tools/src/cli/aql-artifact-cleaner.ts b/packages/@o3r/dev-tools/src/cli/aql-artifact-cleaner.ts
index d269984cd2..405988a59c 100644
--- a/packages/@o3r/dev-tools/src/cli/aql-artifact-cleaner.ts
+++ b/packages/@o3r/dev-tools/src/cli/aql-artifact-cleaner.ts
@@ -33,7 +33,7 @@ const winstonOptions = {
           info.message = JSON.stringify(info.message, null, 3);
         }
 
-        return info.message;
+        return info.message as string;
       })
     )
   }