diff --git a/testcontainers/Cargo.toml b/testcontainers/Cargo.toml
index cd9b066b..dd5bfa68 100644
--- a/testcontainers/Cargo.toml
+++ b/testcontainers/Cargo.toml
@@ -17,7 +17,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
 async-trait = { version = "0.1" }
-bollard = { version = "0.20.0", features = ["buildkit_providerless", "time"] }
+bollard = { version = "0.21.0", features = ["buildkit_providerless", "time"] }
 http = "1.1"
 bytes = "1.6.0"
 conquer-once = { version = "0.4", optional = true }
diff --git a/testcontainers/src/runners/async_runner.rs b/testcontainers/src/runners/async_runner.rs
index 5329f8b8..ba62233c 100644
--- a/testcontainers/src/runners/async_runner.rs
+++ b/testcontainers/src/runners/async_runner.rs
@@ -419,9 +419,9 @@ where
 impl From<&Mount> for bollard::models::Mount {
     fn from(mount: &Mount) -> Self {
         let mount_type = match mount.mount_type() {
-            MountType::Bind => bollard::models::MountTypeEnum::BIND,
-            MountType::Volume => bollard::models::MountTypeEnum::VOLUME,
-            MountType::Tmpfs => bollard::models::MountTypeEnum::TMPFS,
+            MountType::Bind => bollard::models::MountType::BIND,
+            MountType::Volume => bollard::models::MountType::VOLUME,
+            MountType::Tmpfs => bollard::models::MountType::TMPFS,
         };
 
         let is_read_only = matches!(mount.access_mode(), AccessMode::ReadOnly);