diff --git a/lib/analyze-action-post.js b/lib/analyze-action-post.js
index 807ac63a78..312e02135d 100644
--- a/lib/analyze-action-post.js
+++ b/lib/analyze-action-post.js
@@ -117686,7 +117686,7 @@ function withGroup(groupName, f) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/analyze-action.js b/lib/analyze-action.js
index 59c83e477b..473eed69f7 100644
--- a/lib/analyze-action.js
+++ b/lib/analyze-action.js
@@ -90811,7 +90811,7 @@ function formatDuration(durationMs) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/autobuild-action.js b/lib/autobuild-action.js
index 3d47b48127..38c842dce4 100644
--- a/lib/autobuild-action.js
+++ b/lib/autobuild-action.js
@@ -78426,7 +78426,7 @@ function getActionsLogger() {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/init-action-post.js b/lib/init-action-post.js
index 8f90107276..5b9aeb8b5a 100644
--- a/lib/init-action-post.js
+++ b/lib/init-action-post.js
@@ -129016,7 +129016,7 @@ function formatDuration(durationMs) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/init-action.js b/lib/init-action.js
index 0f8fc3ec9a..804f24af12 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -86417,7 +86417,7 @@ function formatDuration(durationMs) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/resolve-environment-action.js b/lib/resolve-environment-action.js
index 53101dc2ce..edc2cc242a 100644
--- a/lib/resolve-environment-action.js
+++ b/lib/resolve-environment-action.js
@@ -78419,7 +78419,7 @@ function getActionsLogger() {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/start-proxy-action-post.js b/lib/start-proxy-action-post.js
index 8bb47e5626..f4ae973df6 100644
--- a/lib/start-proxy-action-post.js
+++ b/lib/start-proxy-action-post.js
@@ -117158,7 +117158,7 @@ function getActionsLogger() {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 
 // src/tools-features.ts
diff --git a/lib/upload-lib.js b/lib/upload-lib.js
index 4f8e075ada..2a81d8771c 100644
--- a/lib/upload-lib.js
+++ b/lib/upload-lib.js
@@ -89114,7 +89114,7 @@ function formatDuration(durationMs) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/lib/upload-sarif-action-post.js b/lib/upload-sarif-action-post.js
index 59847a4a8a..76753057d2 100644
--- a/lib/upload-sarif-action-post.js
+++ b/lib/upload-sarif-action-post.js
@@ -117319,7 +117319,7 @@ function withGroup(groupName, f) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 
 // src/tools-features.ts
diff --git a/lib/upload-sarif-action.js b/lib/upload-sarif-action.js
index fda852a528..a5d754fb34 100644
--- a/lib/upload-sarif-action.js
+++ b/lib/upload-sarif-action.js
@@ -89108,7 +89108,7 @@ function formatDuration(durationMs) {
 
 // src/overlay-database-utils.ts
 var CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
-var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6e3;
+var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15e3;
 var OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES = OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1e6;
 async function writeBaseDatabaseOidsFile(config, sourceRoot) {
   const gitFileOids = await getFileOidsUnderPath(sourceRoot);
diff --git a/src/overlay-database-utils.ts b/src/overlay-database-utils.ts
index c4f6ae7c00..ea43abcaa3 100644
--- a/src/overlay-database-utils.ts
+++ b/src/overlay-database-utils.ts
@@ -22,18 +22,23 @@ export const CODEQL_OVERLAY_MINIMUM_VERSION = "2.22.3";
 
 /**
  * The maximum (uncompressed) size of the overlay base database that we will
- * upload. Actions Cache has an overall capacity of 10 GB, and the Actions Cache
- * client library uses zstd compression.
+ * upload. By default, the Actions Cache has an overall capacity of 10 GB, and
+ * the Actions Cache client library uses zstd compression.
  *
  * Ideally we would apply a size limit to the compressed overlay-base database,
  * but we cannot do so because compression is handled transparently by the
  * Actions Cache client library. Instead we place a limit on the uncompressed
  * size of the overlay-base database.
  *
- * Assuming 2.5:1 compression ratio, the 6 GB limit on uncompressed data would
- * translate to a limit of around 2.4 GB after compression.
+ * Assuming 2.5:1 compression ratio, the 15 GB limit on uncompressed data would
+ * translate to a limit of around 6 GB after compression. This is a high limit
+ * compared to the default 10GB Actions Cache capacity, but enforcement of Actions
+ * Cache quotas is not immediate.
+ *
+ * TODO: revisit this limit before removing the restriction for overlay analysis
+ * to the `github` and `dsp-testing` orgs.
  */
-const OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 6000;
+const OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB = 15000;
 const OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_BYTES =
   OVERLAY_BASE_DATABASE_MAX_UPLOAD_SIZE_MB * 1_000_000;