diff --git a/.travis.yml b/.travis.yml
index 4791218..3d44ff7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ rust:
   - stable
   - beta
   - nightly
-  - 1.31.0
+  - 1.33.0
 os:
   - linux
   - osx
diff --git a/README.markdown b/README.markdown
index ec44a3c..fb03c49 100644
--- a/README.markdown
+++ b/README.markdown
@@ -2,7 +2,7 @@
 
 **Still fairly experimental!**
 
-Minimum Rust version: 1.31
+Minimum Rust version: 1.33
 
 Wrapped Dear ImGui version: 1.66b
 
diff --git a/imgui-sys-bindgen/src/lib.rs b/imgui-sys-bindgen/src/lib.rs
index 0a3233f..4dc0f20 100644
--- a/imgui-sys-bindgen/src/lib.rs
+++ b/imgui-sys-bindgen/src/lib.rs
@@ -90,7 +90,7 @@ pub fn generate_bindings<P: AsRef<Path>>(cimgui_path: &P) -> Result<Bindings, Er
         .raw_line("#![allow(non_snake_case)]")
         .raw_line("#![allow(clippy::all)]")
         .header_contents("cimgui.h", &header)
-        .rust_target(RustTarget::Stable_1_28)
+        .rust_target(RustTarget::Stable_1_33)
         .default_enum_style(EnumVariation::Consts)
         .prepend_enum_name(false)
         .generate_comments(false)