diff --git a/.buildkite/pipeline.yaml b/.buildkite/pipeline.yaml
index 90f77c2c..029b1a11 100644
--- a/.buildkite/pipeline.yaml
+++ b/.buildkite/pipeline.yaml
@@ -3,7 +3,7 @@
   command: "ci/run"
   timeout_in_minutes: 60
   env:
-    DOCKER_IMAGE: gcr.io/opensourcecoin/radicle-registry/ci-base:9956955f61e2c91fb94a2ed4eee26bf17aa44b50
+    DOCKER_IMAGE: gcr.io/opensourcecoin/radicle-registry/ci-base:c068afc4d2012cd70a9943ead3671e2e5b35508a
     DOCKER_FILE: ci/base-image/Dockerfile
     STEP_DOCKER_FILE: ci/node-image/Dockerfile
     STEP_DOCKER_IMAGE: gcr.io/opensourcecoin/radicle-registry/node
diff --git a/ci/base-image/Dockerfile b/ci/base-image/Dockerfile
index 08833f19..0100bc70 100644
--- a/ci/base-image/Dockerfile
+++ b/ci/base-image/Dockerfile
@@ -2,7 +2,7 @@
 #
 # Includes
 #
-# * Rustup with `nightly-2020-03-19` toolchain (see RUST_VERSION)
+# * Rustup with `nightly-2020-04-20` toolchain (see RUST_VERSION)
 # * Additional rustup components and the wasm32 target
 # * sccache v0.2.12
 
@@ -42,7 +42,7 @@ RUN set -euxo pipefail; \
 
 # Install rustup and default toolchain from RUST_VERSION. This is copied from
 # https://github.com/rust-lang/docker-rust/blob/8d0f25416858e2c1f59511a15c2bd0445b402caa/1.39.0/buster/slim/Dockerfile
-ENV RUST_VERSION=nightly-2020-03-19
+ENV RUST_VERSION=nightly-2020-04-20
 RUN set -eux; \
     dpkgArch="$(dpkg --print-architecture)"; \
     case "${dpkgArch##*-}" in \
diff --git a/client/src/lib.rs b/client/src/lib.rs
index f8c6a299..c49a6d63 100644
--- a/client/src/lib.rs
+++ b/client/src/lib.rs
@@ -234,7 +234,7 @@ impl ClientT for Client {
 
     async fn free_balance(&self, account_id: &AccountId) -> Result<state::AccountBalance, Error> {
         let account_info = self
-            .fetch_map_value::<system::Account<Runtime>, _, _>(account_id.clone())
+            .fetch_map_value::<system::Account<Runtime>, _, _>(*account_id)
             .await?;
         Ok(account_info.data.free)
     }
diff --git a/rust-toolchain b/rust-toolchain
index 10a652fd..3103db40 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2020-03-19
+nightly-2020-04-20