diff --git a/CHANGELOG.md b/CHANGELOG.md
index 894106bb..440641c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,17 @@ Every entry has a category for which we use the following visual abbreviations:
 - 🧬 Experimental feature
 - 🐞 Bugfix
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [2021.03.25]
+
+- 🎁 The CIFv3 plugin now supports the
+  [STIX-2 (version 2.1)](https://docs.oasis-open.org/cti/stix/v2.1/stix-v2.1.html)
+  standard for
+  [Indicators](https://docs.oasis-open.org/cti/stix/v2.1/cs02/stix-v2.1-cs02.html#_muftrcpnf89v).
+  The plugin converts STIX-2 Indicators on best-effort basis to CIFv3
+  indicators before forwarding them to the configured CIF endpoint.
+  [#106](https://github.com/tenzir/threatbus/pull/106)
 
 - 🐞 We fixed a bug in the routing logic for SnapshotRequests. Apps can now
   request snapshots as expected for all `stix2`-prefixed topics.
@@ -150,3 +160,4 @@ Every entry has a category for which we use the following visual abbreviations:
 [2020.11.30]: https://github.com/tenzir/threatbus/releases/tag/2020.11.30
 [2020.12.16]: https://github.com/tenzir/threatbus/releases/tag/2020.12.16
 [2021.02.24]: https://github.com/tenzir/threatbus/releases/tag/2021.02.24
+[2021.03.25]: https://github.com/tenzir/threatbus/releases/tag/2021.03.25
diff --git a/apps/vast/CHANGELOG.md b/apps/vast/CHANGELOG.md
index c0975057..e9d90c78 100644
--- a/apps/vast/CHANGELOG.md
+++ b/apps/vast/CHANGELOG.md
@@ -10,7 +10,9 @@ Every entry has a category for which we use the following visual abbreviations:
 - ⚡️ breaking change
 - 🐞 bugfix
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [2021.03.25]
 
 - 🎁 `pyvast-threatbus` now supports the
   [STIX-2 (version 2.1)](https://docs.oasis-open.org/cti/stix/v2.1/stix-v2.1.html)
@@ -85,3 +87,4 @@ Every entry has a category for which we use the following visual abbreviations:
 [2020.11.26]: https://github.com/tenzir/threatbus/releases/tag/2020.11.26
 [2020.12.16]: https://github.com/tenzir/threatbus/releases/tag/2020.12.16
 [2021.02.24]: https://github.com/tenzir/threatbus/releases/tag/2021.02.24
+[2021.03.25]: https://github.com/tenzir/threatbus/releases/tag/2021.03.25
diff --git a/apps/vast/setup.py b/apps/vast/setup.py
index 6377ba84..9038acc9 100644
--- a/apps/vast/setup.py
+++ b/apps/vast/setup.py
@@ -52,5 +52,5 @@
     python_requires=">=3.7",
     setup_requires=["setuptools", "wheel"],
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/apps/threatbus_cif3/setup.py b/plugins/apps/threatbus_cif3/setup.py
index 5bb1b0e7..d7154082 100644
--- a/plugins/apps/threatbus_cif3/setup.py
+++ b/plugins/apps/threatbus_cif3/setup.py
@@ -49,5 +49,5 @@
     packages=["threatbus_cif3"],
     python_requires=">=3.6",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/apps/threatbus_misp/setup.py b/plugins/apps/threatbus_misp/setup.py
index a895a2c5..69c9917c 100644
--- a/plugins/apps/threatbus_misp/setup.py
+++ b/plugins/apps/threatbus_misp/setup.py
@@ -28,7 +28,7 @@
     install_requires=[
         "pymisp >= 2.4.120",
         "stix2 >= 2.1",
-        "threatbus >= 2021.2.24",
+        "threatbus >= 2021.3.25",
     ],
     extras_require={"kafka": ["confluent-kafka>=1.3.0"], "zmq": ["pyzmq>=18.1.1"]},
     keywords=[
@@ -49,5 +49,5 @@
     packages=["threatbus_misp"],
     python_requires=">=3.7",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/apps/threatbus_zeek/setup.py b/plugins/apps/threatbus_zeek/setup.py
index c3e7e338..52488146 100644
--- a/plugins/apps/threatbus_zeek/setup.py
+++ b/plugins/apps/threatbus_zeek/setup.py
@@ -50,5 +50,5 @@
     python_requires=">=3.7",
     setup_requires=["setuptools", "wheel"],
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/apps/threatbus_zmq_app/setup.py b/plugins/apps/threatbus_zmq_app/setup.py
index 87de2e09..402078ef 100644
--- a/plugins/apps/threatbus_zmq_app/setup.py
+++ b/plugins/apps/threatbus_zmq_app/setup.py
@@ -29,7 +29,7 @@
         "pyzmq>=19",
         "python-dateutil>=2.8.1",
         "stix2>=2.1",
-        "threatbus>=2021.2.24",
+        "threatbus>=2021.3.25",
     ],
     keywords=[
         "zeromq",
@@ -47,5 +47,5 @@
     packages=["threatbus_zmq_app"],
     python_requires=">=3.7",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/backbones/file_benchmark/setup.py b/plugins/backbones/file_benchmark/setup.py
index 5c7916b8..44a2d054 100644
--- a/plugins/backbones/file_benchmark/setup.py
+++ b/plugins/backbones/file_benchmark/setup.py
@@ -22,7 +22,10 @@
     ],
     description="A benchmark backbone for threatbus, that reads a file and provisions its contents.",
     entry_points={"threatbus.backbone": ["file_benchmark = file_benchmark.plugin"]},
-    install_requires=["stix2>=2.1", "threatbus>=2021.2.24"],
+    install_requires=[
+        "stix2 >= 2.1",
+        "threatbus >= 2021.2.24",
+    ],
     keywords=["threatbus", "plugin"],
     license="BSD 3-clause",
     long_description=long_description,
@@ -31,5 +34,5 @@
     packages=["file_benchmark"],
     python_requires=">=3.7",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/backbones/threatbus_inmem/setup.py b/plugins/backbones/threatbus_inmem/setup.py
index ab4cd51d..4a9d7575 100644
--- a/plugins/backbones/threatbus_inmem/setup.py
+++ b/plugins/backbones/threatbus_inmem/setup.py
@@ -22,7 +22,10 @@
     ],
     description="A simplistic in-memory backbone for threatbus.",
     entry_points={"threatbus.backbone": ["inmem = threatbus_inmem.plugin"]},
-    install_requires=["stix2>=2.1", "threatbus>=2021.2.24"],
+    install_requires=[
+        "stix2 >= 2.1",
+        "threatbus >= 2021.2.24",
+    ],
     keywords=[
         "message broker",
         "threatbus",
@@ -38,5 +41,5 @@
     packages=["threatbus_inmem"],
     python_requires=">=3.7",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )
diff --git a/plugins/backbones/threatbus_rabbitmq/setup.py b/plugins/backbones/threatbus_rabbitmq/setup.py
index 89229f00..06e21ee5 100644
--- a/plugins/backbones/threatbus_rabbitmq/setup.py
+++ b/plugins/backbones/threatbus_rabbitmq/setup.py
@@ -23,10 +23,10 @@
     description="A RabbitMQ backbone for threatbus.",
     entry_points={"threatbus.backbone": ["rabbitmq = threatbus_rabbitmq.plugin"]},
     install_requires=[
-        "pika>=1.1.0",
+        "pika >= 1.1.0",
         "retry",
-        "stix2>=2.1",
-        "threatbus>=2021.2.24",
+        "stix2 >= 2.1",
+        "threatbus >= 2021.2.24",
     ],
     keywords=[
         "message broker",
@@ -46,5 +46,5 @@
     packages=["threatbus_rabbitmq"],
     python_requires=">=3.7",
     url="https://github.com/tenzir/threatbus",
-    version="2021.02.24",
+    version="2021.03.25",
 )