diff --git a/webrender/src/device/gl.rs b/webrender/src/device/gl.rs
index 4bd97420c4..e239caff74 100644
--- a/webrender/src/device/gl.rs
+++ b/webrender/src/device/gl.rs
@@ -1601,10 +1601,6 @@ impl Device {
         &self.gl
     }
 
-    pub fn update_program_cache(&mut self, cached_programs: Rc<ProgramCache>) {
-        self.cached_programs = Some(cached_programs);
-    }
-
     /// Ensures that the maximum texture size is less than or equal to the
     /// provided value. If the provided value is less than the value supported
     /// by the driver, the latter is used.
diff --git a/webrender/src/renderer.rs b/webrender/src/renderer.rs
index ca4cc4714c..00c009c597 100644
--- a/webrender/src/renderer.rs
+++ b/webrender/src/renderer.rs
@@ -2570,12 +2570,6 @@ impl Renderer {
         self.pipeline_info.epochs.get(&(pipeline_id, document_id)).cloned()
     }
 
-    // update the program cache with new binaries, e.g. when some of the lazy loaded
-    // shader programs got activated in the mean time
-    pub fn update_program_cache(&mut self, cached_programs: Rc<ProgramCache>) {
-        self.device.update_program_cache(cached_programs);
-    }
-
     /// Processes the result queue.
     ///
     /// Should be called before `render()`, as texture cache updates are done here.