diff --git a/rbnicsx/backends/projection.py b/rbnicsx/backends/projection.py
index 573c285..1acbe04 100644
--- a/rbnicsx/backends/projection.py
+++ b/rbnicsx/backends/projection.py
@@ -23,7 +23,7 @@
 
 # We could have used functools.singledispatch rather than plum, but since rbnicsx.online.projection
 # introduces a dependency on plum we also use it here for its better handling in combining docstrings
-# and its easier integration with sympy.
+# and its easier integration with mypy.
 
 
 @plum.overload
diff --git a/rbnicsx/backends/proper_orthogonal_decomposition.py b/rbnicsx/backends/proper_orthogonal_decomposition.py
index 3380c43..fa21ee8 100644
--- a/rbnicsx/backends/proper_orthogonal_decomposition.py
+++ b/rbnicsx/backends/proper_orthogonal_decomposition.py
@@ -22,7 +22,7 @@
 
 # We could have used functools.singledispatch rather than plum, but since rbnicsx.online.projection
 # introduces a dependency on plum we also use it here for its better handling in combining docstrings
-# and its easier integration with sympy.
+# and its easier integration with mypy.
 
 
 @plum.overload
diff --git a/rbnicsx/online/proper_orthogonal_decomposition.py b/rbnicsx/online/proper_orthogonal_decomposition.py
index 508fb5b..61062df 100644
--- a/rbnicsx/online/proper_orthogonal_decomposition.py
+++ b/rbnicsx/online/proper_orthogonal_decomposition.py
@@ -22,7 +22,7 @@
 
 # We could have used functools.singledispatch rather than plum, but since rbnicsx.online.projection
 # introduces a dependency on plum we also use it here for its better handling in combining docstrings
-# and its easier integration with sympy.
+# and its easier integration with mypy.
 
 
 @plum.overload