diff --git a/packages/smithy-aws-core/.changes/next-release/smithy-aws-core-enhancement-2f68b39ece5249f28165643dfc030492.json b/packages/smithy-aws-core/.changes/next-release/smithy-aws-core-enhancement-2f68b39ece5249f28165643dfc030492.json
new file mode 100644
index 000000000..0872a8b7c
--- /dev/null
+++ b/packages/smithy-aws-core/.changes/next-release/smithy-aws-core-enhancement-2f68b39ece5249f28165643dfc030492.json
@@ -0,0 +1,4 @@
+{
+  "type": "enhancement",
+  "description": "Added the `CREDENTIALS_ENV_VARS_STS_WEB_ID_TOKEN`, `CREDENTIALS_STS_ASSUME_ROLE_WEB_ID`, and `CREDENTIALS_PROFILE_STS_WEB_ID_TOKEN` feature IDs for tracking web identity credentials in the User-Agent header."
+}
diff --git a/packages/smithy-aws-core/src/smithy_aws_core/business_metrics.py b/packages/smithy-aws-core/src/smithy_aws_core/business_metrics.py
index 479c12e2a..97b8e4a37 100644
--- a/packages/smithy-aws-core/src/smithy_aws_core/business_metrics.py
+++ b/packages/smithy-aws-core/src/smithy_aws_core/business_metrics.py
@@ -53,7 +53,10 @@ class AwsFeatureId(StrEnum):
     FLEXIBLE_CHECKSUMS_RES_WHEN_REQUIRED = "c"
     CREDENTIALS_CODE = "e"
     CREDENTIALS_ENV_VARS = "g"
+    CREDENTIALS_ENV_VARS_STS_WEB_ID_TOKEN = "h"  # noqa: S105
+    CREDENTIALS_STS_ASSUME_ROLE_WEB_ID = "k"
     CREDENTIALS_PROFILE = "n"
+    CREDENTIALS_PROFILE_STS_WEB_ID_TOKEN = "q"  # noqa: S105
     CREDENTIALS_PROFILE_PROCESS = "v"
     CREDENTIALS_PROCESS = "w"
     FLEXIBLE_CHECKSUMS_REQ_MD5 = "AE"