diff --git a/.github/workflows/bridge-ci.yml b/.github/workflows/bridge-ci.yml
index 54e7c5545..e247042df 100644
--- a/.github/workflows/bridge-ci.yml
+++ b/.github/workflows/bridge-ci.yml
@@ -45,6 +45,8 @@ jobs:
         # include relevant information in the cache name
         prefix-key: "bridge-${{ matrix.rust }}"
 
+    - uses: taiki-e/install-action@nextest
+
     - name: rustfmt
       run: cargo fmt -- --check
       working-directory: bridge
diff --git a/.github/workflows/rust-lint.yml b/.github/workflows/rust-lint.yml
index f3419680d..8e0e306fc 100644
--- a/.github/workflows/rust-lint.yml
+++ b/.github/workflows/rust-lint.yml
@@ -66,10 +66,12 @@ jobs:
         # include relevant information in the cache name
         prefix-key: "rust-client-${{ matrix.rust }}"
 
+    - uses: taiki-e/install-action@nextest
+
     - name: Clippy
       run: cargo clippy --all-targets --all-features -- -D warnings
       working-directory: rust
 
     - name: Run tests
-      run: cargo test --all
+      run: cargo nextest run
       working-directory: rust
diff --git a/.github/workflows/server-ci.yml b/.github/workflows/server-ci.yml
index cfb1476df..1909435bc 100644
--- a/.github/workflows/server-ci.yml
+++ b/.github/workflows/server-ci.yml
@@ -45,6 +45,8 @@ jobs:
         # include relevant information in the cache name
         prefix-key: "server-${{ matrix.rust }}"
 
+    - uses: taiki-e/install-action@nextest
+
     - name: rustfmt
       run: cargo fmt -- --check
       working-directory: server
diff --git a/bridge/run-tests.sh b/bridge/run-tests.sh
index 9c988e95a..ebc8f8d1b 100755
--- a/bridge/run-tests.sh
+++ b/bridge/run-tests.sh
@@ -1,8 +1,20 @@
-#!/bin/sh -e
+#!/bin/bash
+
+if [[ -z "$TEST_COMMAND" ]]; then
+    if [[ -z "$CARGO_HOME" ]]; then
+        CARGO_HOME="$HOME/.cargo"
+    fi
+
+    if command -v cargo-nextest || [[ -e "$CARGO_HOME/bin/cargo-nextest" ]]; then
+        TEST_COMMAND="cargo nextest run"
+    else
+        TEST_COMMAND="cargo test"
+    fi
+fi
 
 AWS_DEFAULT_REGION="elasticmq" \
 AWS_ACCESS_KEY_ID="x" \
 AWS_SECRET_ACCESS_KEY="x" \
 PUBSUB_EMULATOR_HOST=localhost:8085 \
 PUBSUB_PROJECT_ID=local-project \
-cargo test --all-features -- "$@"
+${TEST_COMMAND} --all-features -- "$@"
diff --git a/server/run-tests.sh b/server/run-tests.sh
index faa349c76..236fe3763 100755
--- a/server/run-tests.sh
+++ b/server/run-tests.sh
@@ -1,6 +1,18 @@
-#!/bin/sh -e
+#!/bin/bash
 
-# Run tests with various configurations:
+# Run tests with various configurations.
+
+if [[ -z "$TEST_COMMAND" ]]; then
+    if [[ -z "$CARGO_HOME" ]]; then
+        CARGO_HOME="$HOME/.cargo"
+    fi
+
+    if command -v cargo-nextest || [[ -e "$CARGO_HOME/bin/cargo-nextest" ]]; then
+        TEST_COMMAND="cargo nextest run"
+    else
+        TEST_COMMAND="cargo test"
+    fi
+fi
 
 # Common variables:
 export DATABASE_URL="postgresql://postgres:postgres@localhost:5432/postgres"
@@ -15,8 +27,8 @@ echo "*********** RUN 1 ***********"
     export SVIX_QUEUE_TYPE="redis"
     export SVIX_CACHE_TYPE="redis"
     export SVIX_REDIS_DSN="redis://localhost:6379"
-    cargo test
-    cargo test -- --ignored redis
+    ${TEST_COMMAND}
+    ${TEST_COMMAND} -- --ignored redis
 )
 
 echo "*********** RUN 2 ***********"
@@ -24,7 +36,7 @@ echo "*********** RUN 2 ***********"
     export SVIX_QUEUE_TYPE="redis"
     export SVIX_CACHE_TYPE="memory"
     export SVIX_REDIS_DSN="redis://localhost:6379"
-    cargo test
+    ${TEST_COMMAND}
 )
 
 echo "*********** RUN 3 ***********"
@@ -32,7 +44,7 @@ echo "*********** RUN 3 ***********"
     export SVIX_QUEUE_TYPE="redis"
     export SVIX_CACHE_TYPE="none"
     export SVIX_REDIS_DSN="redis://localhost:6379"
-    cargo test
+    ${TEST_COMMAND}
 )
 
 echo "*********** RUN 4 ***********"
@@ -40,15 +52,15 @@ echo "*********** RUN 4 ***********"
     export SVIX_QUEUE_TYPE="rediscluster"
     export SVIX_CACHE_TYPE="rediscluster"
     export SVIX_REDIS_DSN="redis://localhost:6380"
-    cargo test
-    cargo test -- --ignored redis
+    ${TEST_COMMAND}
+    ${TEST_COMMAND} -- --ignored redis
 )
 
 echo "*********** RUN 5 ***********"
 (
     export SVIX_QUEUE_TYPE="memory"
     export SVIX_CACHE_TYPE="none"
-    cargo test
+    ${TEST_COMMAND}
 )
 
 echo "*********** RUN 6 ***********"
@@ -57,6 +69,6 @@ echo "*********** RUN 6 ***********"
     export SVIX_CACHE_TYPE="redis"
     export SVIX_REDIS_DSN="redis://localhost:6379"
     export SVIX_RABBIT_DSN="amqp://xivs:xivs@localhost:5672/%2f"
-    cargo test
-    cargo test -- --ignored rabbitmq
+    ${TEST_COMMAND}
+    ${TEST_COMMAND} -- --ignored rabbitmq
 )