diff --git a/Cargo.lock b/Cargo.lock
index e8fbf5d6..c75b3c44 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2484,6 +2484,7 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winit 0.19.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "wio 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "x11 2.18.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/demo/native/Cargo.toml b/demo/native/Cargo.toml
index 39c65dc0..b3b48bfa 100644
--- a/demo/native/Cargo.toml
+++ b/demo/native/Cargo.toml
@@ -40,7 +40,7 @@ path = "../../simd"
 [dependencies.surfman]
 git = "https://github.com/pcwalton/surfman"
 rev = "616b9e020585dd650120fb1e6cceb0e2bb43199a"
-features = ["sm-winit"]
+features = ["sm-winit", "sm-x11"]
 
 [dependencies.winit]
 version = "<0.19.4" # 0.19.4 causes build errors https://github.com/rust-windowing/winit/pull/1105
diff --git a/examples/canvas_minimal/Cargo.toml b/examples/canvas_minimal/Cargo.toml
index 89bbe22c..3aa1baf0 100644
--- a/examples/canvas_minimal/Cargo.toml
+++ b/examples/canvas_minimal/Cargo.toml
@@ -37,7 +37,7 @@ path = "../../resources"
 
 [dependencies.surfman]
 version = "0.2"
-features = ["sm-winit"]
+features = ["sm-winit", "sm-x11"]
 
 [dependencies.winit]
 version = "<0.19.4" # 0.19.4 causes build errors https://github.com/rust-windowing/winit/pull/1105
diff --git a/examples/canvas_moire/Cargo.toml b/examples/canvas_moire/Cargo.toml
index 6b5e3380..1ecc4a9e 100644
--- a/examples/canvas_moire/Cargo.toml
+++ b/examples/canvas_moire/Cargo.toml
@@ -39,7 +39,7 @@ path = "../../resources"
 [dependencies.surfman]
 git = "https://github.com/pcwalton/surfman"
 rev = "616b9e020585dd650120fb1e6cceb0e2bb43199a"
-features = ["sm-winit"]
+features = ["sm-winit", "sm-x11"]
 
 [dependencies.winit]
 version = "<0.19.4" # 0.19.4 causes build errors https://github.com/rust-windowing/winit/pull/1105
diff --git a/examples/canvas_nanovg/Cargo.toml b/examples/canvas_nanovg/Cargo.toml
index 837a578d..abae2954 100644
--- a/examples/canvas_nanovg/Cargo.toml
+++ b/examples/canvas_nanovg/Cargo.toml
@@ -53,7 +53,7 @@ path = "../../simd"
 [dependencies.surfman]
 git = "https://github.com/pcwalton/surfman"
 rev = "bc29e7ae88ca7dd64d3b1c7e185604693290207f"
-features = ["sm-winit"]
+features = ["sm-winit", "sm-x11"]
 
 [dependencies.winit]
 version = "<0.19.4" # 0.19.4 causes build errors https://github.com/rust-windowing/winit/pull/1105