diff --git a/base-action/action.yml b/base-action/action.yml
index e31644f..57754ce 100644
--- a/base-action/action.yml
+++ b/base-action/action.yml
@@ -124,7 +124,7 @@ runs:
         PATH_TO_CLAUDE_CODE_EXECUTABLE: ${{ inputs.path_to_claude_code_executable }}
       run: |
         if [ -z "$PATH_TO_CLAUDE_CODE_EXECUTABLE" ]; then
-          CLAUDE_CODE_VERSION="2.1.77"
+          CLAUDE_CODE_VERSION="2.1.78"
           echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
           for attempt in 1 2 3; do
             echo "Installation attempt $attempt..."
diff --git a/src/entrypoints/run.ts b/src/entrypoints/run.ts
index ddeb5f2..b7078ea 100644
--- a/src/entrypoints/run.ts
+++ b/src/entrypoints/run.ts
@@ -51,7 +51,7 @@ async function installClaudeCode(): Promise<void> {
     return;
   }
 
-  const claudeCodeVersion = "2.1.77";
+  const claudeCodeVersion = "2.1.78";
   console.log(`Installing Claude Code v${claudeCodeVersion}...`);
 
   for (let attempt = 1; attempt <= 3; attempt++) {