diff --git a/.github/config/assertoor/network_params_blob.yaml b/.github/config/assertoor/network_params_blob.yaml
index e071848fe..f39e29af7 100644
--- a/.github/config/assertoor/network_params_blob.yaml
+++ b/.github/config/assertoor/network_params_blob.yaml
@@ -4,10 +4,12 @@ participants:
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
   - el_type: geth
+    el_image: ethereum/client-go:v1.14.12
     cl_type: lighthouse
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
   - el_type: geth
+    el_image: ethereum/client-go:v1.14.12
     cl_type: lighthouse
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
diff --git a/.github/config/assertoor/network_params_tx.yaml b/.github/config/assertoor/network_params_tx.yaml
index ce43e992e..321538379 100644
--- a/.github/config/assertoor/network_params_tx.yaml
+++ b/.github/config/assertoor/network_params_tx.yaml
@@ -4,6 +4,7 @@ participants:
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
   - el_type: geth
+    el_image: ethereum/client-go:v1.14.12
     cl_type: lighthouse
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
diff --git a/test_data/network_params.yaml b/test_data/network_params.yaml
index da8ba784a..d28c474b3 100644
--- a/test_data/network_params.yaml
+++ b/test_data/network_params.yaml
@@ -4,10 +4,12 @@ participants:
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
   - el_type: geth
+    el_image: ethereum/client-go:v1.14.12
     cl_type: lighthouse
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32
   - el_type: geth
+    el_image: ethereum/client-go:v1.14.12
     cl_type: lighthouse
     cl_image: sigp/lighthouse:v5.3.0
     validator_count: 32