diff --git a/foundry.toml b/foundry.toml
index 3b892f5..8d7936a 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -36,7 +36,7 @@ forge-std = "1.16.2"
 "rain-lib-typecast" = "0.1.4"
 "rain-math-binary" = "0.1.4"
 "rain-sol-codegen" = "0.1.36"
-"rain-solmem" = "0.1.26"
+"rain-solmem" = "0.1.28"
 
 [soldeer]
 recursive_deps = false
diff --git a/soldeer.lock b/soldeer.lock
index e055c6b..a3056d0 100644
--- a/soldeer.lock
+++ b/soldeer.lock
@@ -42,7 +42,7 @@ integrity = "164e2655ac8b66bcf52c799421706d3dfaab987addaaeadd74574e70fd2eb6ed"
 
 [[dependencies]]
 name = "rain-solmem"
-version = "0.1.26"
-url = "https://soldeer-revisions.s3.amazonaws.com/rain-solmem/0_1_26_18-08-2026_16:20:17_rain.zip"
-checksum = "291a0acf805b8acd65dfb9e848e6670bde158120bb5b0bcdeeaf17c4084a134c"
-integrity = "54e56c1b10d05df72c1c3dcc8df92b99b9f01cd946363158b077c779ce4d20fa"
+version = "0.1.28"
+url = "https://soldeer-revisions.s3.amazonaws.com/rain-solmem/0_1_28_03-09-2026_07:34:16_rain.zip"
+checksum = "3dafbef001edb181683a43c3c295e3f88e2ffcedd751e986562e71e29560c9f0"
+integrity = "e7508cd81a998a67118a0fca314d504dc62850d6b535d29c824f696f214e4b23"
diff --git a/src/lib/bytecode/LibBytecode.sol b/src/lib/bytecode/LibBytecode.sol
index 4a4ed8c..9c46b79 100644
--- a/src/lib/bytecode/LibBytecode.sol
+++ b/src/lib/bytecode/LibBytecode.sol
@@ -2,9 +2,9 @@
 // SPDX-FileCopyrightText: Copyright (c) 2020 Rain Open Source Software Ltd
 pragma solidity ^0.8.25;
 
-import {LibPointer, Pointer} from "rain-solmem-0.1.26/src/lib/LibPointer.sol";
-import {LibBytes} from "rain-solmem-0.1.26/src/lib/LibBytes.sol";
-import {LibMemCpy} from "rain-solmem-0.1.26/src/lib/LibMemCpy.sol";
+import {LibPointer, Pointer} from "rain-solmem-0.1.28/src/lib/LibPointer.sol";
+import {LibBytes} from "rain-solmem-0.1.28/src/lib/LibBytes.sol";
+import {LibMemCpy} from "rain-solmem-0.1.28/src/lib/LibMemCpy.sol";
 import {
     StackSizingsNotMonotonic,
     TruncatedSource,
diff --git a/test/src/lib/bytecode/LibBytecode.sourcePointer.t.sol b/test/src/lib/bytecode/LibBytecode.sourcePointer.t.sol
index b61c3f7..817e5b9 100644
--- a/test/src/lib/bytecode/LibBytecode.sourcePointer.t.sol
+++ b/test/src/lib/bytecode/LibBytecode.sourcePointer.t.sol
@@ -5,7 +5,7 @@ pragma solidity =0.8.25;
 import {BytecodeTest} from "test/abstract/BytecodeTest.sol";
 import {LibBytecode, SourceIndexOutOfBounds} from "src/lib/bytecode/LibBytecode.sol";
 import {LibBytecodeSlow} from "test/src/lib/bytecode/LibBytecodeSlow.sol";
-import {Pointer} from "rain-solmem-0.1.26/src/lib/LibPointer.sol";
+import {Pointer} from "rain-solmem-0.1.28/src/lib/LibPointer.sol";
 
 contract LibBytecodeSourcePointerTest is BytecodeTest {
     function sourcePointerExternal(bytes memory bytecode, uint256 sourceIndex) external pure returns (Pointer pointer) {
diff --git a/test/src/lib/bytecode/LibBytecodeSlow.sol b/test/src/lib/bytecode/LibBytecodeSlow.sol
index 1407fe5..a734c7e 100644
--- a/test/src/lib/bytecode/LibBytecodeSlow.sol
+++ b/test/src/lib/bytecode/LibBytecodeSlow.sol
@@ -3,8 +3,8 @@
 pragma solidity ^0.8.25;
 
 import {SourceIndexOutOfBounds} from "src/lib/bytecode/LibBytecode.sol";
-import {Pointer, LibPointer} from "rain-solmem-0.1.26/src/lib/LibPointer.sol";
-import {LibBytes} from "rain-solmem-0.1.26/src/lib/LibBytes.sol";
+import {Pointer, LibPointer} from "rain-solmem-0.1.28/src/lib/LibPointer.sol";
+import {LibBytes} from "rain-solmem-0.1.28/src/lib/LibBytes.sol";
 
 library LibBytecodeSlow {
     using LibBytes for bytes;
diff --git a/test/src/lib/caller/LibContextSlow.sol b/test/src/lib/caller/LibContextSlow.sol
index c05aff8..855dd18 100644
--- a/test/src/lib/caller/LibContextSlow.sol
+++ b/test/src/lib/caller/LibContextSlow.sol
@@ -4,7 +4,7 @@ pragma solidity =0.8.25;
 
 import {LibHashNoAlloc, HASH_NIL} from "rain-lib-hash-0.1.0/src/LibHashNoAlloc.sol";
 import {LibCast} from "rain-lib-typecast-0.1.4/src/LibCast.sol";
-import {LibUint256Array} from "rain-solmem-0.1.26/src/lib/LibUint256Array.sol";
+import {LibUint256Array} from "rain-solmem-0.1.28/src/lib/LibUint256Array.sol";
 
 import {SignedContextV1} from "src/interface/IInterpreterCallerV4.sol";