diff --git a/frontend/package.json b/frontend/package.json
index 2602d43ec..ed59e0383 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zzimkkong-frontend",
-  "version": "1.4.3",
+  "version": "1.4.4",
   "main": "src/index.tsx",
   "license": "MIT",
   "homepage": "https://github.com/woowacourse-teams/2021-zzimkkong",
diff --git a/frontend/src/components/TimePicker/TimePicker.styles.ts b/frontend/src/components/TimePicker/TimePicker.styles.ts
index 0299550dc..155657b96 100644
--- a/frontend/src/components/TimePicker/TimePicker.styles.ts
+++ b/frontend/src/components/TimePicker/TimePicker.styles.ts
@@ -28,7 +28,7 @@ const labelTextCSS = (labelText: string) => css`
 
 export const Container = styled.div`
   position: relative;
-  z-index: ${Z_INDEX.TIME_PICKER};
+  z-index: ${Z_INDEX.TIME_PICKER_CONTAINER};
 `;
 
 export const TimeContainer = styled.div<TimeContainerProps>`
@@ -70,6 +70,7 @@ export const OptionsContainer = styled.div`
   width: 100%;
   position: absolute;
   user-select: none;
+  z-index: ${Z_INDEX.TIME_PICKER_OPTIONS_CONTAINER};
 `;
 
 export const Dimmer = styled.div`
diff --git a/frontend/src/constants/style.ts b/frontend/src/constants/style.ts
index ea04c3a79..623c84e96 100644
--- a/frontend/src/constants/style.ts
+++ b/frontend/src/constants/style.ts
@@ -3,8 +3,9 @@ export const Z_INDEX = {
   DRAWER_CONTENT: 151,
   DRAWER_DIMMER: 150,
   HEADER: 120,
-  RESERVATION_BUTTON: 102,
-  TIME_PICKER: 101,
+  RESERVATION_BUTTON: 103,
+  TIME_PICKER_OPTIONS_CONTAINER: 102,
+  TIME_PICKER_CONTAINER: 101,
   TIME_PICKER_DIMMER: 100,
   SELECT_LIST_BOX_BUTTON: 50,
   SELECT_LIST_BOX: 49,