diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index d74f37f..71960fa 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -27,11 +27,11 @@ jobs:
 
           echo "Installing zkvyper and era_test_node"
           # Install zkvyper and era_test_node from binary repositories
-          curl --location https://raw.githubusercontent.com/matter-labs/zkvyper-bin/a0d3b90c93d8fba176233fdef074694add25a682/linux-amd64/zkvyper-linux-amd64-musl-v1.5.0 \
+          curl --location https://raw.githubusercontent.com/matter-labs/zkvyper-bin/v1.5.2/linux-amd64/zkvyper-linux-amd64-musl-v1.5.2 \
             --silent --output /usr/local/bin/zkvyper && \
             chmod +x /usr/local/bin/zkvyper && \
             zkvyper --version
-          curl --location https://github.com/matter-labs/era-test-node/releases/download/v0.1.0-alpha.23/era_test_node-v0.1.0-alpha.23-x86_64-unknown-linux-gnu.tar.gz \
+          curl --location https://github.com/matter-labs/era-test-node/releases/download/v0.1.0-alpha.25/era_test_node-v0.1.0-alpha.25-x86_64-unknown-linux-gnu.tar.gz \
             --silent --output era_test_node.tar.gz && \
             tar --extract --file=era_test_node.tar.gz && \
             mv era_test_node /usr/local/bin/era_test_node && \
diff --git a/boa_zksync/deployer.py b/boa_zksync/deployer.py
index 4e7048c..2299f85 100644
--- a/boa_zksync/deployer.py
+++ b/boa_zksync/deployer.py
@@ -1,5 +1,6 @@
 from functools import cached_property
 from pathlib import Path
+from typing import TYPE_CHECKING
 
 from boa import Env
 from boa.contracts.abi.abi_contract import ABIContractFactory, ABIFunction
@@ -9,6 +10,9 @@
 from boa_zksync.contract import ZksyncContract
 from boa_zksync.types import ZksyncCompilerData
 
+if TYPE_CHECKING:
+    from boa_zksync.environment import ZksyncEnv
+
 
 class ZksyncDeployer(ABIContractFactory):
 
@@ -36,14 +40,7 @@ def from_abi_dict(cls, abi, name="<anonymous contract>", filename=None):
         raise NotImplementedError("ZksyncDeployer does not support loading from ABI")
 
     def deploy(self, *args, value=0, **kwargs) -> ZksyncContract:
-        env = Env.get_singleton()
-        from boa_zksync.environment import ZksyncEnv
-
-        assert isinstance(
-            env, ZksyncEnv
-        ), "ZksyncDeployer can only be used in zkSync environments"
-
-        address, _ = env.deploy_code(
+        address, _ = self.env.deploy_code(
             bytecode=self.compiler_data.bytecode,
             value=value,
             constructor_calldata=(
@@ -59,7 +56,6 @@ def at(self, address: Address | str) -> ZksyncContract:
         Create an ABI contract object for a deployed contract at `address`.
         """
         address = Address(address)
-        env = Env.get_singleton()
         contract = ZksyncContract(
             self.compiler_data,
             self._name,
@@ -67,9 +63,9 @@ def at(self, address: Address | str) -> ZksyncContract:
             self.functions,
             address=address,
             filename=self.filename,
-            env=env,
+            env=self.env,
         )
-        env.register_contract(address, contract)
+        self.env.register_contract(address, contract)
         return contract
 
     def deploy_as_blueprint(self, *args, **kwargs) -> ZksyncContract:
@@ -87,3 +83,16 @@ def constructor(self) -> ABIFunction:
         """
         ctor_abi = next(i for i in self.abi if i["type"] == "constructor")
         return ABIFunction(ctor_abi, contract_name=self._name)
+
+    @property
+    def env(self) -> "ZksyncEnv":
+        """
+        Get the environment for this deployer. Ensures that the environment is a ZksyncEnv.
+        :return: The ZksyncEnv singleton.
+        """
+        env = Env.get_singleton()
+        from boa_zksync.environment import ZksyncEnv
+        assert isinstance(
+            env, ZksyncEnv
+        ), "ZksyncDeployer can only be used in zkSync environments"
+        return env
diff --git a/boa_zksync/util.py b/boa_zksync/util.py
index 65fb77c..f0b7cc4 100644
--- a/boa_zksync/util.py
+++ b/boa_zksync/util.py
@@ -39,8 +39,7 @@ def stop_subprocess(proc: Popen[bytes]):
 
 
 def install_zkvyper_compiler(
-    source="https://raw.githubusercontent.com/matter-labs/zkvyper-bin/"
-    "a0d3b90c93d8fba176233fdef074694add25a682/linux-amd64/zkvyper-linux-amd64-musl-v1.5.0",
+    source="https://raw.githubusercontent.com/matter-labs/zkvyper-bin/v1.5.2/linux-amd64/zkvyper-linux-amd64-musl-v1.5.2",  # noqa: E501
     destination="/usr/local/bin/zkvyper",
 ):
     """
@@ -59,8 +58,7 @@ def install_zkvyper_compiler(
 
 
 def install_era_test_node(
-    source="https://github.com/matter-labs/era-test-node/releases/download/"
-    "v0.1.0-alpha.23/era_test_node-v0.1.0-alpha.23-x86_64-unknown-linux-gnu.tar.gz",
+    source="https://github.com/matter-labs/era-test-node/releases/download/v0.1.0-alpha.25/era_test_node-v0.1.0-alpha.25-x86_64-unknown-linux-gnu.tar.gz",  # noqa: E501
     destination="/usr/local/bin/era_test_node",
 ):
     """