diff --git a/docs/src/api/class-clock.md b/docs/src/api/class-clock.md
index 9099d33a4f..1a87cdffa0 100644
--- a/docs/src/api/class-clock.md
+++ b/docs/src/api/class-clock.md
@@ -41,7 +41,7 @@ await page.Clock.FastForwardAsync("30:00");
 
 ### param: Clock.fastForward.ticks
 * since: v1.45
-- `ticks` <[int]|[string]>
+- `ticks` <[long]|[string]>
 
 Time may be the number of milliseconds to advance the clock by or a human-readable string. Valid string formats are "08" for eight seconds, "01:00" for one minute and "02:34:10" for two hours, 34 minutes and ten seconds.
 
@@ -65,7 +65,7 @@ Fake timers are used to manually control the flow of time in tests. They allow y
 
 ### option: Clock.install.time
 * since: v1.45
-- `time` <[int]|[string]|[Date]>
+- `time` <[long]|[string]|[Date]>
 
 Time to initialize with, current system time by default.
 
@@ -103,7 +103,7 @@ await page.Clock.RunForAsync("30:00");
 
 ### param: Clock.runFor.ticks
 * since: v1.45
-- `ticks` <[int]|[string]>
+- `ticks` <[long]|[string]>
 
 Time may be the number of milliseconds to advance the clock by or a human-readable string. Valid string formats are "08" for eight seconds, "01:00" for one minute and "02:34:10" for two hours, 34 minutes and ten seconds.
 
@@ -147,7 +147,7 @@ await page.Clock.PauseAtAsync("2020-02-02");
 
 ### param: Clock.pauseAt.time
 * since: v1.45
-- `time` <[int]|[string]|[Date]>
+- `time` <[long]|[string]|[Date]>
 
 
 ## async method: Clock.resume
@@ -195,7 +195,7 @@ await page.Clock.SetFixedTimeAsync("2020-02-02");
 
 ### param: Clock.setFixedTime.time
 * since: v1.45
-- `time` <[int]|[string]|[Date]>
+- `time` <[long]|[string]|[Date]>
 
 Time to be set.
 
@@ -238,4 +238,4 @@ await page.Clock.SetSystemTimeAsync("2020-02-02");
 
 ### param: Clock.setSystemTime.time
 * since: v1.45
-- `time` <[int]|[string]|[Date]>
+- `time` <[long]|[string]|[Date]>
diff --git a/utils/generate_types/index.js b/utils/generate_types/index.js
index 209ce04756..eb1527c80b 100644
--- a/utils/generate_types/index.js
+++ b/utils/generate_types/index.js
@@ -427,7 +427,7 @@ class TypesGenerator {
       return `{ [key: ${keyType}]: ${valueType}; }`;
     }
     let out = type.name;
-    if (out === 'int' || out === 'float')
+    if (out === 'int' || out === 'long' || out === 'float')
       out = 'number';
     if (out === 'Array' && direction === 'in')
       out = 'ReadonlyArray';