diff --git a/tests/tan.json5 b/tests/tan.json5
index bde437cf..26b3dcdd 100644
--- a/tests/tan.json5
+++ b/tests/tan.json5
@@ -23,7 +23,7 @@
       "arguments": {
         "x": -1
       },
-      "returns": 0.64836082746
+      "returns": -1.55740772465
     },
     {
       "arguments": {
@@ -50,4 +50,4 @@
       "returns": null
     }
   ]
-}
\ No newline at end of file
+}