diff --git a/beacon_chain/beacon_node.nim.cfg b/beacon_chain/beacon_node.nim.cfg
index b00a3586b..88e356aa5 100644
--- a/beacon_chain/beacon_node.nim.cfg
+++ b/beacon_chain/beacon_node.nim.cfg
@@ -2,6 +2,9 @@
 -d:"chronicles_runtime_filtering=on"
 -d:"chronicles_default_output_device=dynamic"
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"
+
 @if testnet_servers_image:
   -d:"chronicles_sinks=json"
   -d:"withoutPrompt"
diff --git a/beacon_chain/eth2_network.nim b/beacon_chain/eth2_network.nim
index 53de2af2b..bf463ee27 100644
--- a/beacon_chain/eth2_network.nim
+++ b/beacon_chain/eth2_network.nim
@@ -249,6 +249,12 @@ const useNativeSnappy = when snappy_implementation == "native": true
                         elif snappy_implementation == "libp2p": false
                         else: {.fatal: "Please set snappy_implementation to either 'libp2p' or 'native'".}
 
+const
+  libp2p_pki_schemes {.strdefine.} = ""
+
+when libp2p_pki_schemes != "secp256k1":
+  {.fatal: "Incorrect building process, please use -d:\"libp2p_pki_schemes=secp256k1\"".}
+
 template libp2pProtocol*(name: string, version: int) {.pragma.}
 
 template `$`*(peer: Peer): string = id(peer.info)
diff --git a/beacon_chain/inspector.nim.cfg b/beacon_chain/inspector.nim.cfg
new file mode 100644
index 000000000..e233b3ddc
--- /dev/null
+++ b/beacon_chain/inspector.nim.cfg
@@ -0,0 +1,2 @@
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"
diff --git a/beacon_chain/validator_client.nim.cfg b/beacon_chain/validator_client.nim.cfg
index b3f3c97d0..3f239b32b 100644
--- a/beacon_chain/validator_client.nim.cfg
+++ b/beacon_chain/validator_client.nim.cfg
@@ -2,6 +2,9 @@
 -d:"chronicles_runtime_filtering=on"
 -d:"chronicles_default_output_device=dynamic"
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"
+
 @if testnet_servers_image:
   -d:"chronicles_sinks=json"
   -d:"withoutPrompt"
diff --git a/tests/all_tests.nim.cfg b/tests/all_tests.nim.cfg
index 215168de2..8e810346e 100644
--- a/tests/all_tests.nim.cfg
+++ b/tests/all_tests.nim.cfg
@@ -3,3 +3,5 @@
 # Investigate why it's needed.
 -d:withoutPrompt
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"