diff --git a/STATE.md b/STATE.md
index 52f87ec..c9c6eda 100644
--- a/STATE.md
+++ b/STATE.md
@@ -50,4 +50,4 @@
 - [2026-03-15] txnBot AGENTS.md ENVIRONMENT enum is stale (#784)
 - [2026-03-20] Adoption milestone state ambiguity in MEMORY.md (#1068)
 - [2026-03-20] OptimizerV3Push3 as IOptimizer always returns bear defaults — integration risk (#1063)
-- [2026-03-21] deploy-optimizer.sh reads LM_ADDR inside a guard that silently skips on missing broadcast JSON (#1051)
+- [2026-03-21] Optimizer and OptimizerV3 lack _disableInitializers() in constructor (#1055)
diff --git a/onchain/src/Optimizer.sol b/onchain/src/Optimizer.sol
index e08d835..08b8769 100644
--- a/onchain/src/Optimizer.sol
+++ b/onchain/src/Optimizer.sol
@@ -86,6 +86,11 @@ interface ILiquidityManagerPositions {
  *   discoveryDepth       discovery liquidity density
  */
 contract Optimizer is Initializable, UUPSUpgradeable, IOptimizer {
+    /// @custom:oz-upgrades-unsafe-allow constructor
+    constructor() {
+        _disableInitializers();
+    }
+
     Kraiken private kraiken;
     Stake private stake;
 
diff --git a/onchain/src/OptimizerV3.sol b/onchain/src/OptimizerV3.sol
index 44705ff..b40d796 100644
--- a/onchain/src/OptimizerV3.sol
+++ b/onchain/src/OptimizerV3.sol
@@ -17,6 +17,11 @@ import { OptimizerV3Push3Lib } from "./OptimizerV3Push3Lib.sol";
  *        r40 -> ci, r39 -> anchorShare, r38 -> anchorWidth, r37 -> discoveryDepth
  */
 contract OptimizerV3 is Optimizer {
+    /// @custom:oz-upgrades-unsafe-allow constructor
+    constructor() {
+        _disableInitializers();
+    }
+
     function calculateParams(OptimizerInput[8] memory inputs)
         public
         pure
diff --git a/onchain/test/Optimizer.t.sol b/onchain/test/Optimizer.t.sol
index 57daa62..799bb8d 100644
--- a/onchain/test/Optimizer.t.sol
+++ b/onchain/test/Optimizer.t.sol
@@ -30,16 +30,11 @@ contract OptimizerTest is Test {
         mockKraiken = new MockKraiken();
         mockStake = new MockStake();
 
-        // Deploy Optimizer implementation
+        // Deploy implementation and proxy
         Optimizer implementation = new Optimizer();
-
-        // Deploy proxy and initialize
         bytes memory initData = abi.encodeWithSelector(Optimizer.initialize.selector, address(mockKraiken), address(mockStake));
-
-        // For simplicity, we'll test the implementation directly
-        // In production, you'd use a proper proxy setup
-        optimizer = implementation;
-        optimizer.initialize(address(mockKraiken), address(mockStake));
+        ERC1967Proxy proxy = new ERC1967Proxy(address(implementation), initData);
+        optimizer = Optimizer(address(proxy));
     }
 
     /**