diff --git a/configs/coins/groestlcoin.json b/configs/coins/groestlcoin.json
index 5f8077f8..acc389f4 100644
--- a/configs/coins/groestlcoin.json
+++ b/configs/coins/groestlcoin.json
@@ -60,7 +60,10 @@
       "xpub_magic_segwit_p2sh": 77429938,
       "xpub_magic_segwit_native": 78792518,
       "slip44": 17,
-      "additional_params": {}
+      "additional_params": {
+        "fiat_rates": "coingecko",
+        "fiat_rates_params": "{\"url\": \"https://api.coingecko.com/api/v3\", \"coin\": \"groestlcoin\", \"periodSeconds\": 60}"
+      }
     }
   },
   "meta": {
diff --git a/configs/coins/groestlcoin_testnet.json b/configs/coins/groestlcoin_testnet.json
index db74e464..3f2aca3f 100644
--- a/configs/coins/groestlcoin_testnet.json
+++ b/configs/coins/groestlcoin_testnet.json
@@ -60,7 +60,10 @@
       "xpub_magic_segwit_p2sh": 71979618,
       "xpub_magic_segwit_native": 73342198,
       "slip44": 1,
-      "additional_params": {}
+      "additional_params": {
+        "fiat_rates": "coingecko",
+        "fiat_rates_params": "{\"url\": \"https://api.coingecko.com/api/v3\", \"coin\": \"groestlcoin\", \"periodSeconds\": 60}"
+      }
     }
   },
   "meta": {