diff --git a/mypy/typeshed/stubs/mypy-extensions/mypy_extensions.pyi b/mypy/typeshed/stubs/mypy-extensions/mypy_extensions.pyi
index 2446244df46f3..6ea23dc00b196 100644
--- a/mypy/typeshed/stubs/mypy-extensions/mypy_extensions.pyi
+++ b/mypy/typeshed/stubs/mypy-extensions/mypy_extensions.pyi
@@ -106,6 +106,7 @@ class i64:
     def __neg__(self) -> i64: ...
     def __invert__(self) -> i64: ...
     def __pos__(self) -> i64: ...
+    def __abs__(self) -> i64: ...
     def __lt__(self, x: i64) -> bool: ...
     def __le__(self, x: i64) -> bool: ...
     def __ge__(self, x: i64) -> bool: ...
@@ -143,6 +144,7 @@ class i32:
     def __neg__(self) -> i32: ...
     def __invert__(self) -> i32: ...
     def __pos__(self) -> i32: ...
+    def __abs__(self) -> i32: ...
     def __lt__(self, x: i32) -> bool: ...
     def __le__(self, x: i32) -> bool: ...
     def __ge__(self, x: i32) -> bool: ...
@@ -180,6 +182,7 @@ class i16:
     def __neg__(self) -> i16: ...
     def __invert__(self) -> i16: ...
     def __pos__(self) -> i16: ...
+    def __abs__(self) -> i16: ...
     def __lt__(self, x: i16) -> bool: ...
     def __le__(self, x: i16) -> bool: ...
     def __ge__(self, x: i16) -> bool: ...
@@ -217,6 +220,7 @@ class u8:
     def __neg__(self) -> u8: ...
     def __invert__(self) -> u8: ...
     def __pos__(self) -> u8: ...
+    def __abs__(self) -> u8: ...
     def __lt__(self, x: u8) -> bool: ...
     def __le__(self, x: u8) -> bool: ...
     def __ge__(self, x: u8) -> bool: ...
diff --git a/mypyc/test-data/run-i16.test b/mypyc/test-data/run-i16.test
index 5dd766871ebb1..6ce77ba836122 100644
--- a/mypyc/test-data/run-i16.test
+++ b/mypyc/test-data/run-i16.test
@@ -121,6 +121,9 @@ def test_simple_arithmetic_ops() -> None:
     assert -two == -2
     assert -neg_one == 1
     assert -zero == 0
+    assert abs(one) == 1
+    assert abs(neg_one) == 1
+    assert abs(zero) == 0
 
 def test_bitwise_ops() -> None:
     x: i16 = 13855 + int()
diff --git a/mypyc/test-data/run-i32.test b/mypyc/test-data/run-i32.test
index 857279fac8172..a094889e5c464 100644
--- a/mypyc/test-data/run-i32.test
+++ b/mypyc/test-data/run-i32.test
@@ -121,6 +121,9 @@ def test_simple_arithmetic_ops() -> None:
     assert -two == -2
     assert -neg_one == 1
     assert -zero == 0
+    assert abs(one) == 1
+    assert abs(neg_one) == 1
+    assert abs(zero) == 0
 
 def test_bitwise_ops() -> None:
     x: i32 = 1920687484 + int()
diff --git a/mypyc/test-data/run-i64.test b/mypyc/test-data/run-i64.test
index b548e4ad0472a..3150be0aefb5a 100644
--- a/mypyc/test-data/run-i64.test
+++ b/mypyc/test-data/run-i64.test
@@ -209,6 +209,9 @@ def test_simple_arithmetic_ops() -> None:
     assert -two == -2
     assert -neg_one == 1
     assert -zero == 0
+    assert abs(one) == 1
+    assert abs(neg_one) == 1
+    assert abs(zero) == 0
 
 def test_bitwise_ops() -> None:
     x: i64 = 7997307308812232241 + int()
diff --git a/mypyc/test-data/run-u8.test b/mypyc/test-data/run-u8.test
index 05844de8ecff7..a48e338705527 100644
--- a/mypyc/test-data/run-u8.test
+++ b/mypyc/test-data/run-u8.test
@@ -82,6 +82,9 @@ def test_simple_arithmetic_ops() -> None:
     assert -two == 254
     assert -neg_one == 1
     assert -zero == 0
+    assert abs(one) == 1
+    assert abs(neg_one) == 255
+    assert abs(zero) == 0
 
 def test_bitwise_ops() -> None:
     x: u8 = 184 + int()
diff --git a/test-data/unit/lib-stub/mypy_extensions.pyi b/test-data/unit/lib-stub/mypy_extensions.pyi
index 4295c33f81ade..43979784e7d05 100644
--- a/test-data/unit/lib-stub/mypy_extensions.pyi
+++ b/test-data/unit/lib-stub/mypy_extensions.pyi
@@ -77,6 +77,7 @@ class u8:
     def __neg__(self) -> u8: ...
     def __invert__(self) -> u8: ...
     def __pos__(self) -> u8: ...
+    def __abs__(self) -> u8: ...
     def __lt__(self, x: u8) -> bool: ...
     def __le__(self, x: u8) -> bool: ...
     def __ge__(self, x: u8) -> bool: ...
@@ -107,6 +108,7 @@ class i16:
     def __neg__(self) -> i16: ...
     def __invert__(self) -> i16: ...
     def __pos__(self) -> i16: ...
+    def __abs__(self) -> i16: ...
     def __lt__(self, x: i16) -> bool: ...
     def __le__(self, x: i16) -> bool: ...
     def __ge__(self, x: i16) -> bool: ...
@@ -137,6 +139,7 @@ class i32:
     def __neg__(self) -> i32: ...
     def __invert__(self) -> i32: ...
     def __pos__(self) -> i32: ...
+    def __abs__(self) -> i32: ...
     def __lt__(self, x: i32) -> bool: ...
     def __le__(self, x: i32) -> bool: ...
     def __ge__(self, x: i32) -> bool: ...
@@ -167,6 +170,7 @@ class i64:
     def __neg__(self) -> i64: ...
     def __invert__(self) -> i64: ...
     def __pos__(self) -> i64: ...
+    def __abs__(self) -> i64: ...
     def __lt__(self, x: i64) -> bool: ...
     def __le__(self, x: i64) -> bool: ...
     def __ge__(self, x: i64) -> bool: ...