diff --git a/CHANGELOG.md b/CHANGELOG.md
index 026d7df..b6d597c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ This file follows the convention described at
 
 ## [Unreleased]
 ### Changed
-- Updated `bindgen` dependency to latest release and fixed compiler issues.
+- Updated `bindgen` dependency to 0.31 release and fixed compiler issues.
   Enum definitions changed again, default in bindgen is different now, and
   using `default_enum_style()` caused endless compiler errors.
 
diff --git a/Cargo.toml b/Cargo.toml
index e7b78dd..cbf4a4e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,5 +14,5 @@ build = "build.rs"
 libc = ">=0.2"
 
 [build-dependencies]
-bindgen = "0.42"
+bindgen = "0.31"
 pkg-config = "0.3"