diff --git a/src/interfaces/IPredicateClient.sol b/src/interfaces/IPredicateClient.sol
index e497a667..c5cdada0 100644
--- a/src/interfaces/IPredicateClient.sol
+++ b/src/interfaces/IPredicateClient.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.28;
+pragma solidity ^0.8.4;
 
 /**
  * @notice error type for unauthorized access
diff --git a/src/interfaces/IPredicateRegistry.sol b/src/interfaces/IPredicateRegistry.sol
index 7a029663..cf5b00eb 100644
--- a/src/interfaces/IPredicateRegistry.sol
+++ b/src/interfaces/IPredicateRegistry.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.28;
+pragma solidity ^0.8.4;
 
 /**
  * @notice Struct that bundles together a statement's parameters for validation
diff --git a/src/mixins/PredicateClient.sol b/src/mixins/PredicateClient.sol
index 10053999..d32cbc2f 100644
--- a/src/mixins/PredicateClient.sol
+++ b/src/mixins/PredicateClient.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.28;
+pragma solidity ^0.8.4;
 
 import {IPredicateRegistry, Attestation, Statement} from "../interfaces/IPredicateRegistry.sol";
 import {IPredicateClient, PredicateClient__Unauthorized} from "../interfaces/IPredicateClient.sol";