diff --git a/lib/analyze-action-post.js b/lib/analyze-action-post.js
index b30ab9f09..484df244c 100644
--- a/lib/analyze-action-post.js
+++ b/lib/analyze-action-post.js
@@ -119928,6 +119928,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/analyze-action.js b/lib/analyze-action.js
index fb9ec0a2e..22d01ab28 100644
--- a/lib/analyze-action.js
+++ b/lib/analyze-action.js
@@ -88658,6 +88658,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/autobuild-action.js b/lib/autobuild-action.js
index d09fe07d8..48485a850 100644
--- a/lib/autobuild-action.js
+++ b/lib/autobuild-action.js
@@ -83977,6 +83977,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/init-action-post.js b/lib/init-action-post.js
index 1d3c4d5d9..b15b16f37 100644
--- a/lib/init-action-post.js
+++ b/lib/init-action-post.js
@@ -123309,6 +123309,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/init-action.js b/lib/init-action.js
index d3f0d35c3..e351b0205 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -86072,6 +86072,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/resolve-environment-action.js b/lib/resolve-environment-action.js
index 7918ab61f..766a59c17 100644
--- a/lib/resolve-environment-action.js
+++ b/lib/resolve-environment-action.js
@@ -83968,6 +83968,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/setup-codeql-action.js b/lib/setup-codeql-action.js
index c9e95730b..f00d601e7 100644
--- a/lib/setup-codeql-action.js
+++ b/lib/setup-codeql-action.js
@@ -83880,6 +83880,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/start-proxy-action-post.js b/lib/start-proxy-action-post.js
index 2386e7c27..85e0aaeb0 100644
--- a/lib/start-proxy-action-post.js
+++ b/lib/start-proxy-action-post.js
@@ -119334,6 +119334,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/start-proxy-action.js b/lib/start-proxy-action.js
index 281341e5a..5613603cb 100644
--- a/lib/start-proxy-action.js
+++ b/lib/start-proxy-action.js
@@ -99996,6 +99996,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/upload-lib.js b/lib/upload-lib.js
index 2e980ba46..a0d12250c 100644
--- a/lib/upload-lib.js
+++ b/lib/upload-lib.js
@@ -87034,6 +87034,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/upload-sarif-action-post.js b/lib/upload-sarif-action-post.js
index 1d2a3a44b..1d6354708 100644
--- a/lib/upload-sarif-action-post.js
+++ b/lib/upload-sarif-action-post.js
@@ -119500,6 +119500,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/lib/upload-sarif-action.js b/lib/upload-sarif-action.js
index 6fd196c32..1266953f0 100644
--- a/lib/upload-sarif-action.js
+++ b/lib/upload-sarif-action.js
@@ -86830,6 +86830,11 @@ var featureConfig = {
     legacyApi: true,
     minimumVersion: "2.15.0"
   },
+  ["csharp_cache_bmn" /* CsharpCacheBuildModeNone */]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: void 0
+  },
   ["csharp_new_cache_key" /* CsharpNewCacheKey */]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",
diff --git a/src/feature-flags.ts b/src/feature-flags.ts
index 133496979..27a3c0f4f 100644
--- a/src/feature-flags.ts
+++ b/src/feature-flags.ts
@@ -47,6 +47,7 @@ export enum Feature {
   AnalyzeUseNewUpload = "analyze_use_new_upload",
   CleanupTrapCaches = "cleanup_trap_caches",
   CppDependencyInstallation = "cpp_dependency_installation_enabled",
+  CsharpCacheBuildModeNone = "csharp_cache_bmn",
   CsharpNewCacheKey = "csharp_new_cache_key",
   DiffInformedQueries = "diff_informed_queries",
   DisableCsharpBuildless = "disable_csharp_buildless",
@@ -133,6 +134,11 @@ export const featureConfig: Record<
     legacyApi: true,
     minimumVersion: "2.15.0",
   },
+  [Feature.CsharpCacheBuildModeNone]: {
+    defaultValue: false,
+    envVar: "CODEQL_ACTION_CSHARP_CACHE_BMN",
+    minimumVersion: undefined,
+  },
   [Feature.CsharpNewCacheKey]: {
     defaultValue: false,
     envVar: "CODEQL_ACTION_CSHARP_NEW_CACHE_KEY",