diff --git a/.changeset/patch-update-agentic-cli-tools-20260531.md b/.changeset/patch-update-agentic-cli-tools-20260531.md
new file mode 100644
index 00000000000..7e84db5d684
--- /dev/null
+++ b/.changeset/patch-update-agentic-cli-tools-20260531.md
@@ -0,0 +1,5 @@
+---
+"gh-aw": patch
+---
+
+Update default tool versions in `pkg/constants/version_constants.go`: Claude Code `2.1.158`, Copilot CLI `1.0.56`, GitHub MCP Server `v1.1.2`.
diff --git a/pkg/constants/version_constants.go b/pkg/constants/version_constants.go
index 5d601daa8f6..9c24b72854e 100644
--- a/pkg/constants/version_constants.go
+++ b/pkg/constants/version_constants.go
@@ -32,14 +32,14 @@ func (v Version) IsValid() bool {
 type ModelName string
 
 // DefaultClaudeCodeVersion is the default version of the Claude Code CLI.
-const DefaultClaudeCodeVersion Version = "2.1.156"
+const DefaultClaudeCodeVersion Version = "2.1.158"
 
 // DefaultCopilotVersion is the default version of the GitHub Copilot CLI.
 //
 // When unpinning or upgrading this version, verify:
 //   - MCPs are not blocked from loading (tools.mcp configuration still works end-to-end)
 //   - /models does not silently fail on PATs (check that model listing works with PAT auth)
-const DefaultCopilotVersion Version = "1.0.55"
+const DefaultCopilotVersion Version = "1.0.56"
 
 // DefaultCodexVersion is the default version of the OpenAI Codex CLI
 const DefaultCodexVersion Version = "0.135.0"
@@ -60,7 +60,7 @@ const DefaultPiVersion Version = "0.75.4"
 const DefaultOpenCodeVersion Version = "1.2.14"
 
 // DefaultGitHubMCPServerVersion is the default version of the GitHub MCP server Docker image
-const DefaultGitHubMCPServerVersion Version = "v1.1.0"
+const DefaultGitHubMCPServerVersion Version = "v1.1.2"
 
 // DefaultFirewallVersion is the default version of the gh-aw-firewall (AWF) binary
 //