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Nethermind

Nethermind · C# · LGPL-3.0

.NET execution client, widely used by institutional operators.

executionEthereum MainnetHoodiSepoliaHoleskyEphemery
NethermindEth/nethermindDocsWebsitenethermind/nethermind

Required by network upgrades

UpgradeNetworkMinimum
GlamsterdamSepolia≥ 2.1.0
FusakaEthereum Mainnet≥ 1.35.3

Releases

Rated by the generic rules · weight 1.5
Channel
Severity
Type
Network
Fork
37 releases
Nethermindzkvm-guests-2.3.0-preview+3
Why this rating
  • performance wording: "- Heavily optimized with significant performance improvements"
Oct 26, 2026
Nethermind2.2.2
Why this rating
  • security wording: "See the Microsoft announcement for details of the fixed vulnerabilities."
Oct 26, 2026
Nethermind2.2.1
Why this rating
  • high (hoodi): v2.2.1 > [!IMPORTANT] Hoodi node operators must upgrade before Mon, 26 Oct 2026, 17:42:48 UTC.
  • fork scheduled (hoodi): A patch release on top of 2.2.0 that removes the Glamsterdam (Amsterdam) fork from Hoodi, which was planned for Mon, 26 Oct 2026, 17:42:48 UTC (timestamp 1793036568).
Oct 22, 2026
Nethermindzkvm-guests-2.3.0-preview+2
Why this rating
  • performance wording: "- Heavily optimized with significant performance improvements"
Oct 22, 2026
Nethermindzkvm-guests-2.3.0-preview+1
Oct 19, 2026
Nethermindzkvm-guests-2.2.0-preview+1
Oct 19, 2026
Nethermind2.2.0
Why this rating
  • high (hoodi): Hoodi nodes must run 2.2.0 or later before then.
  • fork scheduled (hoodi): > [!IMPORTANT] > Hoodi: Glamsterdam activates on Mon, 26 Oct 2026, 17:42:48 UTC (timestamp 1793036568, epoch 132352).
  • fork scheduled (hoodi): The fork is scheduled at 1793036568 (Mon, 26 Oct 2026, 17:42:48 UTC), and Hoodi's chainspec now carries its correct beacon-chain genesis timestamp.
  • security wording: "- .NET libraries updated to the October 2026 servicing release, which carries Microsoft's security fixes (.NET 10.0.13 CVE list) (#14628):"
  • breaking wording: "The breaking changes below cover 2.1.0 → 2.2.0 only."
Oct 16, 2026
Nethermind2.1.0
Why this rating
  • high (sepolia): Sepolia nodes must run 2.1.0 or later.
  • breaking wording: "The breaking changes below cover 2.0.0 → 2.1.0 only."
  • performance wording: "- Faster EVM."
Oct 1, 2026
Nethermindzkvm-guests-2.1.0-unstable-5c2a2768
Why this rating
  • performance wording: "In addition to ZisK v1.3.0-alpha support, this release brings impressive performance improvements:"
Sep 24, 2026
Nethermind2.0.0
Why this rating
  • breaking wording: "There are breaking changes — read Breaking changes before upgrading, especially if you run an archive node, set custom config keys, or build against Nethermind as a library or plu…"
  • performance wording: "Nethermind 2.0.0 is a hardened, faster, archive-capable execution client, built for Ethereum, its L2s, and beyond."
Sep 22, 2026
Nethermind2.0.0-rc2
Why this rating
  • breaking wording: "The complete list of breaking changes from 1.39.x, including everything from 2.0.0-rc, is in the 2.0.0 breaking changes."
Sep 14, 2026
Nethermind1.39.3
Why this rating
  • high (all networks): v1.39.3 > [!IMPORTANT] > This is a mandatory update for all node operators.
Aug 6, 2026
Nethermindzisk-guest-r8
Aug 3, 2026
Nethermind1.39.2
Why this rating
  • high (all networks): v1.39.2 > [!IMPORTANT] > Given the number of CVEs from Microsoft this release fixes it is mandatory for all node operators. >
  • security wording: "This is a patch release on top of 1.39.1 that updates the .NET dependencies to Microsoft's July 2026 servicing release (10.0.10), which 17 CVE security fixes, and makes the eth_ge…"
Jul 21, 2026
Nethermind1.39.1
Jul 16, 2026
Nethermind1.39.0
Why this rating
  • performance wording: "This release focuses on node robustness, Flat DB durability — alongside the eth/71 wire protocol, a reworked discovery stack, a large JSON-RPC features-and-correctness batch, cont…"
Jul 8, 2026
Nethermindzisk-guest-r7
Jun 23, 2026
Nethermind1.38.1
Why this rating
  • performance wording: "This is a patch release focused on Optimism / OP Stack support."
Jun 15, 2026
Nethermind1.38.0
Why this rating
  • performance wording: "This release improves node robustness, restart safety, RPC compatibility, and runtime performance, especially for Flat DB users, RPC-heavy workloads, and chains relying on upcomin…"
Jun 2, 2026
Nethermind1.37.2
Why this rating
  • consensus-safety wording: "This release fixes healthcheck and Archive Invalid Block issues on 1.37.1"
May 5, 2026
Nethermind1.37.1
Why this rating
  • Breaking changes: - eth/66 and eth/67 dropped; eth/69 is now default and eth/70 added and activated (#9938, #10246) - Engine API versioning reworked (#10786) - Vault and NDM cod…
  • changelog entry: "* fix: bump Microsoft.AspNetCore.DataProtection to 10.0.7 (GHSA-9mv3-2cwr-p262) by @stdevMac in"
  • performance wording: "Major worldstate backend refactor, RocksDB snapshots, flat storage for snap sync, block-level access lists (EIP-7928), initial zkEVM groundwork, and a large round of JSON-RPC and …"
Apr 28, 2026
Nethermind1.37.0
Why this rating
  • Breaking changes: eth/66 and eth/67 dropped ; eth/69 is now default and eth/70 added and activated (#9938, #10246) Engine API versioning reworked (#10786) Vault and NDM code pat…
  • changelog entry: "* fix: bump Microsoft.AspNetCore.DataProtection to 10.0.7 (GHSA-9mv3-2cwr-p262) by @stdevMac in"
  • performance wording: "Major worldstate backend refactor, RocksDB snapshots, flat storage for snap sync, block-level access lists (EIP-7928), initial zkEVM groundwork, and a large round of JSON-RPC and …"
Apr 24, 2026
Nethermind1.36.2
Mar 25, 2026
Nethermind1.36.1
Why this rating
  • fork scheduled (mainnet): This patch release enables the Osaka hard fork on the Chiado testnet, allowing operators and developers to test Osaka fork behavior on Chiado before Gnosis mainnet activation.
Mar 6, 2026
Nethermind1.36.0
Why this rating
  • high (all networks): If you build it from source, you need to update your build configuration accordingly (#9391)
  • breaking wording: "It also includes a couple of intentional breaking changes via the removal of obsolete configs/modules."
  • performance wording: "This release brings over 416 improvements across 1821 files; focusing on operator ergonomics, and RPC / execution correctness hardening, plus a steady stream of performance improv…"
Jan 13, 2026
Nethermind1.35.8
Why this rating
  • performance wording: "- Optimized getProofs RPC endpoints for better performance and efficiency."
Dec 19, 2025
Nethermind1.35.7
Dec 12, 2025
Nethermind1.35.4
Dec 10, 2025
Nethermind1.35.3
Nov 25, 2025
Nethermind1.35.2
Why this rating
  • high (mainnet); high (all networks): > [!IMPORTANT] > This release replaces v1.35.1 and is mandatory for all node operators. > > It includes the Ethereum Mainnet Fusaka hard fork configuration (Osaka, BPO1, and BPO2 upgrades). > > All n…
Nov 6, 2025
Nethermind1.35.1
Why this rating
  • high (mainnet); high (all networks): > [!IMPORTANT] > This release is mandatory for all node operators. > > It includes the Ethereum Mainnet Fusaka hard fork (Osaka, BPO1, and BPO2 forks) and critical improvements that ensure network st…
  • performance wording: "This release continues the performance and reliability improvements introduced in v1.35.0 while activating the key Ethereum Mainnet Fusaka hard fork and strengthening node stabili…"
Nov 5, 2025
Nethermind1.35.0
Why this rating
  • medium (all networks): These changes are strongly recommended for all operators to maintain compatibility and ensure optimal stability with the latest network parameters.
  • performance wording: "This version introduces important updates and optimizations across multiple components, improving network stability, performance, and test coverage."
Oct 20, 2025
Nethermind1.34.1
Why this rating
  • high (all networks): > [!IMPORTANT] > This release is mandatory for all node operators.
  • high (all networks): If you have encountered the code missing issue, operators will need to update and resync their nodes.
Oct 6, 2025
Nethermind1.34.0
Why this rating
  • high (hoodi, sepolia, holesky): > [!IMPORTANT] > This release is mandatory for all testnet operators for the upcoming Fusaka hard fork. > It includes protocol changes and fixes required to remain in consensus on testnets. > - Holes…
  • consensus-safety wording: "* Corrected blockhash handling and rare invalid block cases (#9340)."
  • performance wording: "* Various performance optimizations: bloom filters, Patricia trie, TrieNode navigation, gas estimation (#9191, #9220, #9221, #9195, #9064, #9210)."
Sep 25, 2025
Nethermind1.33.1
Sep 4, 2025
Nethermind1.33.0
Why this rating
  • performance wording: "This release brings over 340 improvements across 2012 files, ranging from performance enhancements, protocol upgrades, and node-runner improvements."
Sep 1, 2025
Nethermind1.32.4
Why this rating
  • performance wording: "- #9054: Optimizes peer-distance calculations for faster network operations."
Jul 31, 2025