diff --git a/src/analysis/conversion_type.rs b/src/analysis/conversion_type.rs
index 1fabeb129..60f12e4ac 100644
--- a/src/analysis/conversion_type.rs
+++ b/src/analysis/conversion_type.rs
@@ -71,6 +71,13 @@ impl ConversionType {
                 Filename => Self::Pointer,
                 OsString => Self::Pointer,
                 Type => Self::Scalar,
+                TimeT => Self::Direct,
+                OffT => Self::Direct,
+                DevT => Self::Direct,
+                GidT => Self::Direct,
+                PidT => Self::Direct,
+                SockLenT => Self::Direct,
+                UidT => Self::Direct,
                 None => Self::Unknown,
                 IntPtr => Self::Direct,
                 UIntPtr => Self::Direct,
diff --git a/src/analysis/ffi_type.rs b/src/analysis/ffi_type.rs
index 0df9a678c..3583ff28a 100644
--- a/src/analysis/ffi_type.rs
+++ b/src/analysis/ffi_type.rs
@@ -94,6 +94,13 @@ fn ffi_inner(env: &Env, tid: TypeId, inner: &str) -> Result {
                 SSize => "libc::ssize_t",
                 Float => "libc::c_float",
                 Double => "libc::c_double",
+                TimeT => "libc::time_t",
+                OffT => "libc::off_t",
+                DevT => "libc::dev_t",
+                GidT => "libc::gid_t",
+                PidT => "libc::pid_t",
+                SockLenT => "libc::socklen_t",
+                UidT => "libc::uid_t",
                 UniChar => "u32",
                 Utf8 => "libc::c_char",
                 Filename => "libc::c_char",
diff --git a/src/codegen/sys/ffi_type.rs b/src/codegen/sys/ffi_type.rs
index fdab83664..58168f941 100644
--- a/src/codegen/sys/ffi_type.rs
+++ b/src/codegen/sys/ffi_type.rs
@@ -90,6 +90,13 @@ fn ffi_inner(env: &Env, tid: library::TypeId, mut inner: String) -> Result {
                 ULong => "c_ulong",
                 Size => "size_t",
                 SSize => "ssize_t",
+                TimeT => "time_t",
+                OffT => "off_t",
+                DevT => "dev_t",
+                GidT => "gid_t",
+                PidT => "pid_t",
+                SockLenT => "socklen_t",
+                UidT => "uid_t",
                 Float => "c_float",
                 Double => "c_double",
                 UniChar => "u32",
diff --git a/src/codegen/sys/statics.rs b/src/codegen/sys/statics.rs
index 87d2b1e27..74bc1732b 100644
--- a/src/codegen/sys/statics.rs
+++ b/src/codegen/sys/statics.rs
@@ -20,7 +20,10 @@ pub fn after_extern_crates(w: &mut dyn Write) -> Result<()> {
         "#[allow(unused_imports)]",
         "use libc::{c_int, c_char, c_uchar, c_float, c_uint, c_double,",
         "    c_short, c_ushort, c_long, c_ulong,",
-        "    c_void, size_t, ssize_t, intptr_t, uintptr_t, FILE};",
+        "    c_void, size_t, ssize_t, time_t, off_t, intptr_t, uintptr_t, FILE};",
+        "#[cfg(unix)]",
+        "#[allow(unused_imports)]",
+        "use libc::{dev_t, gid_t, pid_t, socklen_t, uid_t};",
     ];
 
     write_vec(w, &v)
diff --git a/src/library.rs b/src/library.rs
index 63d24d3bd..1b0f60640 100644
--- a/src/library.rs
+++ b/src/library.rs
@@ -230,6 +230,13 @@ pub enum Basic {
     Type,
     IntPtr,
     UIntPtr,
+    TimeT,
+    OffT,
+    DevT,
+    GidT,
+    PidT,
+    SockLenT,
+    UidT,
     // Same encoding as Filename but can contains any string
     // Not defined in GLib directly
     OsString,
@@ -303,6 +310,13 @@ const BASIC: &[(&str, Basic)] = &[
     // TODO: this is temporary name, change it when type added to GLib
     ("os_string", Basic::OsString),
     ("bool", Basic::Bool),
+    ("time_t", Basic::TimeT),
+    ("off_t", Basic::OffT),
+    ("dev_t", Basic::DevT),
+    ("gid_t", Basic::GidT),
+    ("pid_t", Basic::PidT),
+    ("socklen_t", Basic::SockLenT),
+    ("uid_t", Basic::UidT),
 ];
 
 #[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]