diff --git a/CHANGELOG.md b/CHANGELOG.md
index dff462e06..6ec1a7561 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ All notable changes to this project will be documented in this file.
 - Updated all java-base images to stackable0.2.2 ([#250]).
 - Updated all ubi8 base images to latest (8.6-994) ([#250]).
 - Updated all internal images to rebuild their base images on demand ([#321]).
+- Unpinned testing-tools dependencies ([#326]).
 
 ### Removed
 
@@ -28,3 +29,4 @@ All notable changes to this project will be documented in this file.
 [#250]: https://github.com/stackabletech/docker-images/pull/250
 [#321]: https://github.com/stackabletech/docker-images/pull/321
 [#325]: https://github.com/stackabletech/docker-images/pull/325
+[#326]: https://github.com/stackabletech/docker-images/pull/326
diff --git a/conf.py b/conf.py
index 9cb188306..2d44b25ba 100644
--- a/conf.py
+++ b/conf.py
@@ -271,11 +271,10 @@
             },
         ],
     },
-    # Build is broken
-    # {
-    #     'name': 'testing-tools',
-    #     'versions': [{'product': '0.1.0'}],
-    # },
+    {
+        'name': 'testing-tools',
+        'versions': [{'product': '0.1.0'}],
+    },
     {
         # ZooKeeper must be at least 3.5.0
         'name': 'zookeeper',
diff --git a/testing-tools/Dockerfile b/testing-tools/Dockerfile
index d82ee0f18..a248ce42c 100644
--- a/testing-tools/Dockerfile
+++ b/testing-tools/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-slim@sha256:13b98a4ddf43c98e3f91bd5136844ff0b0c1d2a4c913b4a430d552a43d4c7b3b AS builder
+FROM python:3.10-slim-bullseye@sha256:13b98a4ddf43c98e3f91bd5136844ff0b0c1d2a4c913b4a430d552a43d4c7b3b AS builder
 
 ARG PRODUCT
 ARG RELEASE
@@ -16,24 +16,24 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-        build-essential=12.9 \
-        ca-certificates=20210119 \
-        curl=7.74.0-1.3+deb11u2 \
-        gzip=1.10-4+deb11u1 \
-        jq=1.6-2.1 \
-        libssl-dev=1.1.1n-0+deb11u3 \
-        libxml2-dev=2.9.10+dfsg-6.7+deb11u2 \
-        libxslt1-dev=1.1.34-4 \
-        pkg-config=0.29.2-1 \
-        python3-certifi=2020.6.20-1 \
-        python3-idna=2.10-1 \
-        python3-requests=2.25.1+dfsg-2 \
-        python3-semver=2.10.2-2 \
-        python3-thrift=0.13.0-6 \
-        python3-toml=0.10.1-1 \
-        python3-urllib3=1.26.5-1~exp1 \
-        tar=1.34+dfsg-1 \
-        zip=3.0-12 && \
+        build-essential \
+        ca-certificates \
+        curl \
+        gzip \
+        jq \
+        libssl-dev \
+        libxml2-dev \
+        libxslt1-dev \
+        pkg-config \
+        python3-certifi \
+        python3-idna \
+        python3-requests \
+        python3-semver \
+        python3-thrift \
+        python3-toml \
+        python3-urllib3 \
+        tar \
+        zip && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*