diff --git a/Cargo.toml b/Cargo.toml
index 84147792..cefc8652 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ pyo3-ffi = { path = "pyo3-ffi", version = "=0.19.0" }
 # support crates for macros feature
 pyo3-macros = { path = "pyo3-macros", version = "=0.19.0", optional = true }
 indoc = { version = "2.0.1", optional = true }
-unindent = { version = "0.1.4", optional = true }
+unindent = { version = "0.2.1", optional = true }
 
 # support crate for multiple-pymethods feature
 inventory = { version = "0.3.0", optional = true }
diff --git a/newsfragments/3237.packaging.md b/newsfragments/3237.packaging.md
index fa9bb3d5..fb69e3da 100644
--- a/newsfragments/3237.packaging.md
+++ b/newsfragments/3237.packaging.md
@@ -1 +1 @@
-Bump `indoc` dependency to 2.0.
+Bump `indoc` dependency to 2.0 and `unindent` to 0.2.