diff --git a/Dockerfile b/Dockerfile
index cb8b4fc..68f62c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=amd64 rust@sha256:f1cbe94e8dbfa9deaa8a7d90d801ed81db2a84c363276b6a93055d3c4bba7409 AS strip-stage
+FROM --platform=amd64 rust@sha256:6e6d04bd50cd4c433a805c58c13f186a508c5b5417b9b61cae40ec28e0593c51 AS strip-stage
 ARG DIRNAME
 RUN apt-get update
 RUN apt-get -y install binutils binutils-aarch64-linux-gnu
diff --git a/tests/document_tests.rs b/tests/document_tests.rs
index 01e5afa..59ea5a4 100644
--- a/tests/document_tests.rs
+++ b/tests/document_tests.rs
@@ -16,7 +16,6 @@ fn document_new() {
     assert_ne!(document.id(), "");
     assert_eq!(document.revision_id(), None);
     assert_eq!(document.sequence(), 0);
-    assert!(document.properties());
     assert_eq!(document.properties().count(), 0);
 }
 
@@ -29,7 +28,6 @@ fn document_new_with_id() {
     assert_eq!(document.id(), "foo");
     assert_eq!(document.revision_id(), None);
     assert_eq!(document.sequence(), 0);
-    assert!(document.properties());
     assert_eq!(document.properties().count(), 0);
 }
 
diff --git a/tests/fleece_tests.rs b/tests/fleece_tests.rs
index abe270e..1e39d29 100644
--- a/tests/fleece_tests.rs
+++ b/tests/fleece_tests.rs
@@ -72,7 +72,6 @@ fn basic_values() {
     assert_eq!(dict.get("s").as_string(), Some("Foo"));
 
     let a = dict.get("a").as_array();
-    assert!(a);
     assert_eq!(a, a);
     assert_eq!(a.count(), 2);
     assert_eq!(a.get(0).as_i64(), Some(1));