diff --git a/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.test.ts b/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.test.ts
index d6352d2e6aa15..8ff75b25388b0 100644
--- a/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.test.ts
+++ b/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.test.ts
@@ -1112,6 +1112,7 @@ describe('get_filter', () => {
                     '@timestamp': {
                       gte: 'now-5m',
                       lte: 'now',
+                      format: 'strict_date_optional_time',
                     },
                   },
                 },
@@ -1148,6 +1149,7 @@ describe('get_filter', () => {
                     'event.ingested': {
                       gte: 'now-5m',
                       lte: 'now',
+                      format: 'strict_date_optional_time',
                     },
                   },
                 },
@@ -1183,6 +1185,7 @@ describe('get_filter', () => {
                     '@timestamp': {
                       gte: 'now-5m',
                       lte: 'now',
+                      format: 'strict_date_optional_time',
                     },
                   },
                 },
diff --git a/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.ts b/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.ts
index 278ce1d39ae9f..73638fc48f381 100644
--- a/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.ts
+++ b/x-pack/plugins/security_solution/common/detection_engine/get_query_filter.ts
@@ -117,6 +117,7 @@ export const buildEqlSearchRequest = (
         [timestamp]: {
           gte: from,
           lte: to,
+          format: 'strict_date_optional_time',
         },
       },
     },