diff --git a/unix/types_freebsd.go b/unix/types_freebsd.go
index eb352406..aab703c7 100644
--- a/unix/types_freebsd.go
+++ b/unix/types_freebsd.go
@@ -141,6 +141,8 @@ type Timespec C.struct_timespec
 
 type Timeval C.struct_timeval
 
+type Time_t C.time_t
+
 // Processes
 
 type Rusage C.struct_rusage
diff --git a/unix/ztypes_freebsd_386.go b/unix/ztypes_freebsd_386.go
index 1f99c024..4eec078e 100644
--- a/unix/ztypes_freebsd_386.go
+++ b/unix/ztypes_freebsd_386.go
@@ -31,6 +31,8 @@ type Timeval struct {
 	Usec int32
 }
 
+type Time_t int32
+
 type Rusage struct {
 	Utime    Timeval
 	Stime    Timeval
diff --git a/unix/ztypes_freebsd_amd64.go b/unix/ztypes_freebsd_amd64.go
index ddf0305a..7622904a 100644
--- a/unix/ztypes_freebsd_amd64.go
+++ b/unix/ztypes_freebsd_amd64.go
@@ -31,6 +31,8 @@ type Timeval struct {
 	Usec int64
 }
 
+type Time_t int64
+
 type Rusage struct {
 	Utime    Timeval
 	Stime    Timeval
diff --git a/unix/ztypes_freebsd_arm.go b/unix/ztypes_freebsd_arm.go
index dce0a5c8..19223ce8 100644
--- a/unix/ztypes_freebsd_arm.go
+++ b/unix/ztypes_freebsd_arm.go
@@ -33,6 +33,8 @@ type Timeval struct {
 	_    [4]byte
 }
 
+type Time_t int32
+
 type Rusage struct {
 	Utime    Timeval
 	Stime    Timeval
diff --git a/unix/ztypes_freebsd_arm64.go b/unix/ztypes_freebsd_arm64.go
index e2324470..8e3e33f6 100644
--- a/unix/ztypes_freebsd_arm64.go
+++ b/unix/ztypes_freebsd_arm64.go
@@ -31,6 +31,8 @@ type Timeval struct {
 	Usec int64
 }
 
+type Time_t int64
+
 type Rusage struct {
 	Utime    Timeval
 	Stime    Timeval