diff --git a/script/optimized-deployer-meta b/script/optimized-deployer-meta
index d8fe7f34..7742b2f5 100644
--- a/script/optimized-deployer-meta
+++ b/script/optimized-deployer-meta
@@ -1,6 +1,6 @@
 {
-  "constant_product_hash": "0x0d88f1315e17e158728b50a3b541d72fca6fb319bd3b40f5d77ec5bc14e1b5f0",
-  "factory_hash": "0xf26eca6c3685e02d8ed650af75358a3a77a4e56341aa2ab4eeaa0af7b72ff1a5",
-  "oracle_caller_hash": "0x1f76e9132423bbe7c6e8ab5fd2d1a5ac5f9ce2cfd6bafa7173fec4e7e2f8636f",
-  "stable_hash": "0x146377d2702444609b7597a3c2a665a566396eb86996b9d27c70daf1cc6eaff8"
+  "constant_product_hash": "0xc76b43fa1476112c559b63206e8bbf49b93a41e8d7ef98c987084af683e5ed45",
+  "factory_hash": "0xd20459c5a251f10047ce49e7c183cc2346cec22882957a7dfd55ed348dd4926f",
+  "oracle_caller_hash": "0x44e853c535a85438ba6f7bf16eb2be67a0a746783c671d4760f6f8dd15632382",
+  "stable_hash": "0xdaeb6328160335e59d03c244e4f057e14058ff4c1a6b32096ead8400b0d2619b"
 }
\ No newline at end of file
diff --git a/src/ReservoirDeployer.sol b/src/ReservoirDeployer.sol
index 75aff769..f84d3e03 100644
--- a/src/ReservoirDeployer.sol
+++ b/src/ReservoirDeployer.sol
@@ -17,12 +17,12 @@ contract ReservoirDeployer {
     uint256 public step = 0;
 
     // Bytecode hashes.
-    bytes32 public constant FACTORY_HASH = bytes32(0xf26eca6c3685e02d8ed650af75358a3a77a4e56341aa2ab4eeaa0af7b72ff1a5);
+    bytes32 public constant FACTORY_HASH = bytes32(0xd20459c5a251f10047ce49e7c183cc2346cec22882957a7dfd55ed348dd4926f);
     bytes32 public constant CONSTANT_PRODUCT_HASH =
-        bytes32(0x0d88f1315e17e158728b50a3b541d72fca6fb319bd3b40f5d77ec5bc14e1b5f0);
-    bytes32 public constant STABLE_HASH = bytes32(0x146377d2702444609b7597a3c2a665a566396eb86996b9d27c70daf1cc6eaff8);
+        bytes32(0xc76b43fa1476112c559b63206e8bbf49b93a41e8d7ef98c987084af683e5ed45);
+    bytes32 public constant STABLE_HASH = bytes32(0xdaeb6328160335e59d03c244e4f057e14058ff4c1a6b32096ead8400b0d2619b);
     bytes32 public constant ORACLE_CALLER_HASH =
-        bytes32(0x1f76e9132423bbe7c6e8ab5fd2d1a5ac5f9ce2cfd6bafa7173fec4e7e2f8636f);
+        bytes32(0x44e853c535a85438ba6f7bf16eb2be67a0a746783c671d4760f6f8dd15632382);
 
     // Deployment addresses.
     GenericFactory public factory;
diff --git a/test/unit/ConstantProductPair.t.sol b/test/unit/ConstantProductPair.t.sol
index 38430d16..d6e93740 100644
--- a/test/unit/ConstantProductPair.t.sol
+++ b/test/unit/ConstantProductPair.t.sol
@@ -319,46 +319,6 @@ contract ConstantProductPairTest is BaseTest, IReservoirCallee {
         assertEq(lIndex, 3);
     }
 
-    function testWriteObservations() external {
-        // arrange
-        // swap 1
-        _stepTime(1);
-        _tokenA.mint(address(_constantProductPair), 1e17);
-        _constantProductPair.swap(1e17, true, address(this), "");
-
-        // swap 2
-        _stepTime(1);
-        _tokenA.mint(address(_constantProductPair), 1e17);
-        _constantProductPair.swap(1e17, true, address(this), "");
-
-        // sanity
-        (,,, uint256 lIndex) = _constantProductPair.getReserves();
-        assertEq(lIndex, 1);
-
-        Observation memory lObs = _oracleCaller.observation(_constantProductPair, 0);
-        assertTrue(lObs.logAccRawPrice == 0);
-        assertTrue(lObs.timestamp != 0);
-
-        lObs = _oracleCaller.observation(_constantProductPair, 1);
-        assertTrue(lObs.logAccRawPrice != 0);
-        assertTrue(lObs.timestamp != 0);
-
-        // act
-        _writeObservation(_constantProductPair, 0, int24(12), int24(-34), int88(56), int88(-78), uint32(666));
-
-        // assert
-        lObs = _oracleCaller.observation(_constantProductPair, 0);
-        assertEq(lObs.logInstantRawPrice, int24(12));
-        assertEq(lObs.logInstantClampedPrice, int24(-34));
-        assertEq(lObs.logAccRawPrice, int88(56));
-        assertEq(lObs.logAccClampedPrice, int88(-78));
-        assertEq(lObs.timestamp, uint32(666));
-
-        lObs = _oracleCaller.observation(_constantProductPair, 1);
-        assertTrue(lObs.logAccRawPrice != 0);
-        assertTrue(lObs.timestamp != 0);
-    }
-
     function testOracle_OverflowAccPrice(uint32 aNewStartTime) public randomizeStartTime(aNewStartTime) {
         // arrange - make the last observation close to overflowing
         (,,, uint16 lIndex) = _constantProductPair.getReserves();
diff --git a/test/unit/OracleWriter.t.sol b/test/unit/OracleWriter.t.sol
index 0a50e17a..63638fc2 100644
--- a/test/unit/OracleWriter.t.sol
+++ b/test/unit/OracleWriter.t.sol
@@ -31,6 +31,55 @@ contract OracleWriterTest is BaseTest {
         }
     }
 
+    function testWriteObservations() external allPairs {
+        // arrange
+        // swap 1
+        _stepTime(1);
+        (uint256 lReserve0, uint256 lReserve1,,) = _pair.getReserves();
+        _tokenA.mint(address(_pair), 5e18);
+        _pair.swap(5e18, true, address(this), "");
+
+        // swap 2
+        _stepTime(1);
+        (lReserve0, lReserve1,,) = _pair.getReserves();
+        _tokenA.mint(address(_pair), 5e18);
+        _pair.swap(5e18, true, address(this), "");
+
+        // sanity
+        (,,, uint16 lIndex) = _pair.getReserves();
+        assertEq(lIndex, 1);
+
+        Observation memory lObs = _oracleCaller.observation(_pair, 0);
+        assertEq(lObs.logAccRawPrice, 0);
+        assertEq(lObs.logAccClampedPrice, 0);
+        assertNotEq(lObs.logInstantRawPrice, 0);
+        assertNotEq(lObs.logInstantClampedPrice, 0);
+        assertNotEq(lObs.timestamp, 0);
+
+        lObs = _oracleCaller.observation(_pair, 1);
+        assertNotEq(lObs.logAccRawPrice, 0);
+        assertNotEq(lObs.logAccClampedPrice, 0);
+        assertNotEq(lObs.logInstantRawPrice, 0);
+        assertNotEq(lObs.logInstantClampedPrice, 0);
+        assertNotEq(lObs.timestamp, 0);
+
+        // act
+        _writeObservation(_pair, 0, int24(123), int24(-456), int88(789), int56(-1011), uint32(666));
+
+        // assert
+        lObs = _oracleCaller.observation(_pair, 0);
+        assertEq(lObs.logInstantRawPrice, int24(123));
+        assertEq(lObs.logInstantClampedPrice, int24(-456));
+        assertEq(lObs.logAccRawPrice, int88(789));
+        assertEq(lObs.logAccClampedPrice, int88(-1011));
+        assertEq(lObs.timestamp, uint32(666));
+
+        lObs = _oracleCaller.observation(_pair, 1);
+        assertNotEq(lObs.logAccRawPrice, 0);
+        assertNotEq(lObs.logAccClampedPrice, 0);
+        assertNotEq(lObs.timestamp, 0);
+    }
+
     function testObservation_NotOracleCaller(uint256 aIndex) external allPairs {
         // assume
         uint256 lIndex = bound(aIndex, 0, type(uint16).max);
diff --git a/test/unit/StablePair.t.sol b/test/unit/StablePair.t.sol
index a30766b8..bbd34560 100644
--- a/test/unit/StablePair.t.sol
+++ b/test/unit/StablePair.t.sol
@@ -1546,51 +1546,6 @@ contract StablePairTest is BaseTest {
         assertEq(lIndex, 3);
     }
 
-    function testWriteObservations() external {
-        // arrange
-        // swap 1
-        _stepTime(1);
-        (uint256 lReserve0, uint256 lReserve1,,) = _stablePair.getReserves();
-        _tokenA.mint(address(_stablePair), 5e18);
-        _stablePair.swap(5e18, true, address(this), "");
-
-        // swap 2
-        _stepTime(1);
-        (lReserve0, lReserve1,,) = _stablePair.getReserves();
-        _tokenA.mint(address(_stablePair), 5e18);
-        _stablePair.swap(5e18, true, address(this), "");
-
-        // sanity
-        (,,, uint16 lIndex) = _stablePair.getReserves();
-        assertEq(lIndex, 1);
-
-        Observation memory lObs = _oracleCaller.observation(_stablePair, 0);
-        assertTrue(lObs.logAccRawPrice == 0);
-        assertTrue(lObs.logAccClampedPrice == 0);
-        assertTrue(lObs.timestamp != 0);
-
-        lObs = _oracleCaller.observation(_stablePair, 1);
-        assertTrue(lObs.logAccRawPrice != 0);
-        assertTrue(lObs.logAccClampedPrice != 0);
-        assertTrue(lObs.timestamp != 0);
-
-        // act
-        _writeObservation(_stablePair, 0, int24(123), int24(-456), int88(789), int56(-1011), uint32(666));
-
-        // assert
-        lObs = _oracleCaller.observation(_stablePair, 0);
-        assertEq(lObs.logInstantRawPrice, int24(123));
-        assertEq(lObs.logInstantClampedPrice, int24(-456));
-        assertEq(lObs.logAccRawPrice, int88(789));
-        assertEq(lObs.logAccClampedPrice, int88(-1011));
-        assertEq(lObs.timestamp, uint32(666));
-
-        lObs = _oracleCaller.observation(_stablePair, 1);
-        assertTrue(lObs.logAccRawPrice != 0);
-        assertTrue(lObs.logAccClampedPrice != 0);
-        assertTrue(lObs.timestamp != 0);
-    }
-
     function testOracle_OverflowAccPrice(uint32 aNewStartTime) public randomizeStartTime(aNewStartTime) {
         // assume
         vm.assume(aNewStartTime >= 1);