diff --git a/CITATION.cff b/CITATION.cff
index 81c07f893..a5a2be797 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -41,5 +41,5 @@ abstract: >-
   A Python package that wraps the functionality of the C++
   library libsemigroups.
 license: GPL-3.0+
-version: 1.4.2
-date-released: "2026-03-20"
+version: 1.4.3
+date-released: "2026-04-16"
diff --git a/README.md b/README.md
index 222cca047..d64f77334 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ presented, semigroups and monoids. The main algorithms implemented in
 [Efficient Testing of Equivalence of Words in a Free Idempotent Semigroup]: https://link.springer.com/chapter/10.1007/978-3-642-11266-9_55
 [Applications of automata theory to presentations of monoids and inverse monoids]: https://digitalcommons.unl.edu/dissertations/AAI8803771/
 [Todd-Coxeter algorithm]: https://en.wikipedia.org/wiki/Todd%E2%80%93Coxeter_algorithm
-[The Todd-Coxeter algorithm for semigroups and monoids]: https://doi.org/10.1007/s00233-024-1.4.2-z
+[The Todd-Coxeter algorithm for semigroups and monoids]: https://doi.org/10.1007/s00233-024-10431-z
 [Schreier-Sims algorithm]: https://en.wikipedia.org/wiki/Schreier%E2%80%93Sims_algorithm
 [Expository Slides]: https://www.irif.fr/~jep/PDF/Exposes/StAndrews.pdf
 [Semigroupe 2.01]: https://www.irif.fr/~jep/Logiciels/Semigroupe2.0/semigroupe2.html
@@ -150,10 +150,10 @@ uv pip install .
 To build `libsemigroups_pybind11` from a release archive:
 
 ```console
-curl -L -O https://github.com/libsemigroups/libsemigroups_pybind11/releases/latest/download/libsemigroups_pybind11-1.4.2.tar.gz
-tar -xf libsemigroups_pybind11-1.4.2.tar.gz
-rm -f libsemigroups_pybind11-1.4.2.tar.gz
-cd libsemigroups_pybind11-1.4.2
+curl -L -O https://github.com/libsemigroups/libsemigroups_pybind11/releases/latest/download/libsemigroups_pybind11-1.4.3.tar.gz
+tar -xf libsemigroups_pybind11-1.4.3.tar.gz
+rm -f libsemigroups_pybind11-1.4.3.tar.gz
+cd libsemigroups_pybind11-1.4.3
 pip install .
 ```
 
diff --git a/build_tools/__init__.py b/build_tools/__init__.py
index 267ba36df..3646f7fdd 100644
--- a/build_tools/__init__.py
+++ b/build_tools/__init__.py
@@ -11,4 +11,4 @@ def minimum_libsemigroups_version():
     """Returns the minimum required version of libsemigroups required to build
     libsemigroups_pybind11.
     """
-    return "3.5.3"
+    return "3.5.5"
diff --git a/docs/source/changelog-v1.rst b/docs/source/changelog-v1.rst
index 71e94ff3d..e3789c3a6 100644
--- a/docs/source/changelog-v1.rst
+++ b/docs/source/changelog-v1.rst
@@ -8,6 +8,13 @@
 Changelog - version 1
 =====================
 
+v1.4.3 (released 16/04/2026)
+----------------------------
+
+This a minor release which includes the latest version of libsemigroups_
+(v3.5.5), which contains a number of bugfixes, this lead to some corrections to
+the doc code examples also. 
+
 v1.4.2 (released 20/03/2026)
 ----------------------------
 
diff --git a/docs/source/install.rst b/docs/source/install.rst
index b3caaed41..10e6a1181 100644
--- a/docs/source/install.rst
+++ b/docs/source/install.rst
@@ -101,10 +101,10 @@ To build ``libsemigroups_pybind11`` from a release archive:
 
 ::
 
-    $ curl -L -O https://github.com/libsemigroups/libsemigroups_pybind11/releases/latest/download/libsemigroups_pybind11-1.4.2.tar.gz
-    $ tar -xf libsemigroups_pybind11-1.4.2.tar.gz
-    $ rm -f libsemigroups_pybind11-1.4.2.tar.gz
-    $ cd libsemigroups_pybind11-1.4.2
+    $ curl -L -O https://github.com/libsemigroups/libsemigroups_pybind11/releases/latest/download/libsemigroups_pybind11-1.4.3.tar.gz
+    $ tar -xf libsemigroups_pybind11-1.4.3.tar.gz
+    $ rm -f libsemigroups_pybind11-1.4.3.tar.gz
+    $ cd libsemigroups_pybind11-1.4.3
     $ pip install .
 
 Building the documentation