diff --git a/contracts/interfaces/IPoolManager.sol b/contracts/interfaces/IPoolManager.sol
index 1d92a26ca..55380f017 100644
--- a/contracts/interfaces/IPoolManager.sol
+++ b/contracts/interfaces/IPoolManager.sol
@@ -182,11 +182,11 @@ interface IPoolManager is IERC1155 {
     /// @notice Called by external contracts to access granular pool state
     /// @param slot Key of slot to sload
     /// @return value The value of the slot as bytes32
-    function extsload(bytes32 slot) external returns (bytes32 value);
+    function extsload(bytes32 slot) external view returns (bytes32 value);
 
     /// @notice Called by external contracts to access granular pool state
     /// @param slot Key of slot to start sloading from
     /// @param nSlots Number of slots to load into return value
     /// @return value The value of the sload-ed slots concatentated as dynamic bytes
-    function extsload(bytes32 slot, uint256 nSlots) external returns (bytes memory value);
+    function extsload(bytes32 slot, uint256 nSlots) external view returns (bytes memory value);
 }