diff --git a/crates/e2e/Cargo.toml b/crates/e2e/Cargo.toml
index 0fb88001d6f..3705bf9cd28 100644
--- a/crates/e2e/Cargo.toml
+++ b/crates/e2e/Cargo.toml
@@ -21,6 +21,7 @@ ink_env = { version = "4.0.0-beta.1", path = "../env" }
 ink_primitives = { version = "4.0.0-beta.1", path = "../primitives" }
 
 contract-metadata = { version = "2.0.0-rc" }
+funty = "2.0.0"
 impl-serde = { version = "0.3.1", default-features = false }
 jsonrpsee = { version = "0.16.0", features = ["ws-client"] }
 serde = { version = "1.0.137", default-features = false, features = ["derive"] }
@@ -29,14 +30,14 @@ tokio = { version = "1.18.2", features = ["rt-multi-thread"] }
 log = { version = "0.4" }
 env_logger = { version = "0.10" }
 scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive", "full"] }
-subxt = "0.25.0"
+subxt = "0.26.0"
 
 # Substrate
-pallet-contracts-primitives = "7.0.0"
-sp-core = "7.0.0"
-sp-keyring = "7.0.0"
-sp-runtime = "7.0.0"
-sp-weights = "4.0.0"
+pallet-contracts-primitives = "12.0.0"
+sp-core = "11.0.0"
+sp-keyring = "12.0.0"
+sp-runtime = "12.0.0"
+sp-weights = "8.0.0"
 
 [dev-dependencies]
 # Required for the doctest of `MessageBuilder::call`
diff --git a/crates/e2e/src/client.rs b/crates/e2e/src/client.rs
index 6e725a870f1..9324c1eab5b 100644
--- a/crates/e2e/src/client.rs
+++ b/crates/e2e/src/client.rs
@@ -32,30 +32,22 @@ use ink_env::Environment;
 use ink_primitives::MessageResult;
 
 use sp_core::Pair;
-use sp_runtime::traits::{
-    IdentifyAccount,
-    Verify,
-};
 use std::{
     collections::BTreeMap,
     fmt::Debug,
     path::Path,
 };
+
 use subxt::{
     blocks::ExtrinsicEvents,
+    config::ExtrinsicParams,
     events::EventDetails,
-    ext::{
-        bitvec::macros::internal::funty::Fundamental,
-        scale_value::{
-            Composite,
-            Value,
-            ValueDef,
-        },
-    },
-    tx::{
-        ExtrinsicParams,
-        PairSigner,
+    ext::scale_value::{
+        Composite,
+        Value,
+        ValueDef,
     },
+    tx::PairSigner,
 };
 
 /// Result of a contract instantiation.
@@ -103,6 +95,7 @@ where
 impl<C, E> core::fmt::Debug for InstantiationResult<C, E>
 where
     C: subxt::Config,
+    C::AccountId: Debug,
     E: Environment,
     <E as Environment>::AccountId: Debug,
     <E as Environment>::Balance: Debug,
@@ -287,14 +280,10 @@ where
 impl<C, E> Client<C, E>
 where
     C: subxt::Config,
-    C::AccountId: Into<C::Address> + serde::de::DeserializeOwned,
-    C::Address: From<C::AccountId>,
+    C::AccountId: serde::de::DeserializeOwned,
+    C::AccountId: scale::Codec + Debug,
     C::Signature: From<sr25519::Signature>,
-    <C::Signature as Verify>::Signer: From<sr25519::Public>,
     <C::ExtrinsicParams as ExtrinsicParams<C::Index, C::Hash>>::OtherParams: Default,
-    <C::Signature as Verify>::Signer:
-        From<sr25519::Public> + IdentifyAccount<AccountId = C::AccountId>,
-    sr25519::Signature: Into<C::Signature>,
 
     E: Environment,
     E::AccountId: Debug,
@@ -348,11 +337,12 @@ where
     ) -> Signer<C>
     where
         E::Balance: Clone,
-        C::AccountId: Clone + core::fmt::Display,
+        C::AccountId: Clone + core::fmt::Display + core::fmt::Debug,
+        C::AccountId: From<sp_core::crypto::AccountId32>,
     {
         let (pair, _, _) = <sr25519::Pair as Pair>::generate_with_phrase(None);
-        let account_id =
-            <C::Signature as Verify>::Signer::from(pair.public()).into_account();
+        let pair_signer = PairSigner::<C, _>::new(pair);
+        let account_id = pair_signer.account_id().to_owned();
 
         for _ in 0..6 {
             let transfer_result = self
@@ -380,7 +370,7 @@ where
             }
         }
 
-        PairSigner::new(pair)
+        pair_signer
     }
 
     /// This function extracts the metadata of the contract at the file path
@@ -540,6 +530,8 @@ where
 
     /// Generate a unique salt based on the system time.
     fn salt() -> Vec<u8> {
+        use funty::Fundamental as _;
+
         std::time::SystemTime::now()
             .duration_since(std::time::UNIX_EPOCH)
             .unwrap_or_else(|err| panic!("unable to get unix time: {err}"))
@@ -660,7 +652,12 @@ where
 
         let dry_run = self
             .api
-            .call_dry_run(signer.account_id().clone(), &message, value, None)
+            .call_dry_run(
+                subxt::tx::Signer::account_id(signer).clone(),
+                &message,
+                value,
+                None,
+            )
             .await;
         log_info(&format!("call dry run: {:?}", &dry_run.result));
         log_info(&format!(
@@ -732,7 +729,12 @@ where
             .api
             .client
             .storage()
-            .fetch_or_default(&account_addr, None)
+            .at(None)
+            .await
+            .unwrap_or_else(|err| {
+                panic!("unable to fetch balance: {:?}", err);
+            })
+            .fetch_or_default(&account_addr)
             .await
             .unwrap_or_else(|err| {
                 panic!("unable to fetch balance: {err:?}");
diff --git a/crates/e2e/src/default_accounts.rs b/crates/e2e/src/default_accounts.rs
index 1e0b542411a..fe8349d8871 100644
--- a/crates/e2e/src/default_accounts.rs
+++ b/crates/e2e/src/default_accounts.rs
@@ -16,9 +16,7 @@
 
 use super::{
     AccountKeyring,
-    IdentifyAccount,
     PairSigner,
-    Verify,
 };
 use sp_core::sr25519;
 
@@ -33,9 +31,8 @@ macro_rules! default_account {
         pub fn $fn_name<C>() -> PairSigner<C, sr25519::Pair>
         where
             C: subxt::Config,
-            <C::Signature as Verify>::Signer: From<sr25519::Public>,
             C::Signature: From<sr25519::Signature>,
-            <C::Signature as Verify>::Signer: IdentifyAccount<AccountId = C::AccountId>,
+            C::AccountId: From<sp_core::crypto::AccountId32>
         {
             PairSigner::new(AccountKeyring::$keyring_fn_name.pair())
         }
diff --git a/crates/e2e/src/lib.rs b/crates/e2e/src/lib.rs
index ca867b5798d..f03f3f5bfd6 100644
--- a/crates/e2e/src/lib.rs
+++ b/crates/e2e/src/lib.rs
@@ -52,10 +52,6 @@ use pallet_contracts_primitives::{
     ContractInstantiateResult,
 };
 use sp_core::sr25519;
-use sp_runtime::traits::{
-    IdentifyAccount,
-    Verify,
-};
 use std::{
     cell::RefCell,
     sync::Once,
@@ -71,20 +67,22 @@ impl subxt::Config for SubstrateConfig {
     type Index = u32;
     type BlockNumber = u32;
     type Hash = sp_core::H256;
-    type Hashing = sp_runtime::traits::BlakeTwo256;
-    type AccountId = sp_runtime::AccountId32;
+    type Hasher = subxt::config::substrate::BlakeTwo256;
+    type AccountId = subxt::config::substrate::AccountId32;
     type Address = sp_runtime::MultiAddress<Self::AccountId, u32>;
-    type Header =
-        sp_runtime::generic::Header<Self::BlockNumber, sp_runtime::traits::BlakeTwo256>;
+    type Header = subxt::config::substrate::SubstrateHeader<
+        Self::BlockNumber,
+        subxt::config::substrate::BlakeTwo256,
+    >;
     type Signature = sp_runtime::MultiSignature;
-    type ExtrinsicParams = subxt::tx::SubstrateExtrinsicParams<Self>;
+    type ExtrinsicParams = subxt::config::substrate::SubstrateExtrinsicParams<Self>;
 }
 
 /// Default set of commonly used types by Polkadot nodes.
 #[cfg(feature = "std")]
 pub type PolkadotConfig = subxt::config::WithExtrinsicParams<
     SubstrateConfig,
-    subxt::tx::PolkadotExtrinsicParams<SubstrateConfig>,
+    subxt::config::polkadot::PolkadotExtrinsicParams<SubstrateConfig>,
 >;
 
 /// Signer that is used throughout the E2E testing.
diff --git a/crates/e2e/src/xts.rs b/crates/e2e/src/xts.rs
index fafe279b8e6..a5d94d30eba 100644
--- a/crates/e2e/src/xts.rs
+++ b/crates/e2e/src/xts.rs
@@ -18,9 +18,7 @@ use super::{
     sr25519,
     ContractExecResult,
     ContractInstantiateResult,
-    IdentifyAccount,
     Signer,
-    Verify,
 };
 use ink_env::Environment;
 
@@ -41,7 +39,7 @@ use sp_core::{
 use sp_weights::Weight;
 use subxt::{
     blocks::ExtrinsicEvents,
-    tx::ExtrinsicParams,
+    config::ExtrinsicParams,
     OnlineClient,
 };
 
@@ -176,14 +174,10 @@ pub struct ContractsApi<C: subxt::Config, E: Environment> {
 impl<C, E> ContractsApi<C, E>
 where
     C: subxt::Config,
-    C::AccountId: Into<C::Address> + serde::de::DeserializeOwned,
-    <C::ExtrinsicParams as ExtrinsicParams<C::Index, C::Hash>>::OtherParams: Default,
-
+    C::AccountId: serde::de::DeserializeOwned,
+    C::AccountId: scale::Codec,
     C::Signature: From<sr25519::Signature>,
-    <C::Signature as Verify>::Signer: From<sr25519::Public>,
-    <C::Signature as Verify>::Signer:
-        From<sr25519::Public> + IdentifyAccount<AccountId = C::AccountId>,
-    sr25519::Signature: Into<C::Signature>,
+    <C::ExtrinsicParams as ExtrinsicParams<C::Index, C::Hash>>::OtherParams: Default,
 
     E: Environment,
     E::Balance: scale::HasCompact + serde::Serialize,
@@ -251,7 +245,7 @@ where
     ) -> ContractInstantiateResult<C::AccountId, E::Balance> {
         let code = Code::Upload(code);
         let call_request = RpcInstantiateRequest::<C, E> {
-            origin: signer.account_id().clone(),
+            origin: subxt::tx::Signer::account_id(signer).clone(),
             value,
             gas_limit: None,
             storage_deposit_limit,
@@ -337,7 +331,7 @@ where
         storage_deposit_limit: Option<E::Balance>,
     ) -> CodeUploadResult<E::Hash, E::Balance> {
         let call_request = RpcCodeUploadRequest::<C, E> {
-            origin: signer.account_id().clone(),
+            origin: subxt::tx::Signer::account_id(signer).clone(),
             code,
             storage_deposit_limit,
             determinism: Determinism::Deterministic,