diff --git a/OMPython/ModelicaSystem.py b/OMPython/ModelicaSystem.py
index 3e4a947f..3e681df0 100644
--- a/OMPython/ModelicaSystem.py
+++ b/OMPython/ModelicaSystem.py
@@ -34,14 +34,14 @@
 )
 
 from OMPython.compatibility_v400 import (
-    depreciated_class,
+    deprecated_class,
 )
 
 # define logger using the current module name as ID
 logger = logging.getLogger(__name__)
 
 
-@depreciated_class(msg="Please use class ModelicaSystemOMC instead!")
+@deprecated_class(msg="Please use class ModelicaSystemOMC instead!")
 class ModelicaSystem(ModelicaSystemOMC):
     """
     High-level interface for loading, compiling, and simulating Modelica models.
@@ -432,7 +432,7 @@ def getOutputs(
         raise ModelicaSystemError("Invalid data!")
 
 
-@depreciated_class(msg="Please use class ModelicaDoEOMC instead!")
+@deprecated_class(msg="Please use class ModelicaDoEOMC instead!")
 class ModelicaSystemDoE(ModelicaDoEOMC):
     """
     Compatibility class for Design of Experiments (DoE) with Modelica models.
@@ -441,7 +441,7 @@ class ModelicaSystemDoE(ModelicaDoEOMC):
     """
 
 
-@depreciated_class(msg="Please use class ModelExecutionConfig instead!")
+@deprecated_class(msg="Please use class ModelExecutionConfig instead!")
 class ModelicaSystemCmd(ModelExecutionConfig):
     """
     Compatibility wrapper for model execution configuration.
@@ -484,7 +484,7 @@ def parse_simflags(simflags: str) -> dict[str, Optional[str | dict[str, Any] | n
         ModelExecutionException: If a flag or override definition is malformed.
     """
     warnings.warn(
-        message="The argument 'simflags' is depreciated and will be removed in future versions; "
+        message="The argument 'simflags' is deprecated and will be removed in future versions; "
                 "please use 'simargs' instead",
         category=DeprecationWarning,
         stacklevel=2,
diff --git a/OMPython/OMCSession.py b/OMPython/OMCSession.py
index 43867ca3..05a5c2a8 100644
--- a/OMPython/OMCSession.py
+++ b/OMPython/OMCSession.py
@@ -26,24 +26,24 @@
 )
 
 from OMPython.compatibility_v400 import (
-    depreciated_class,
+    deprecated_class,
 )
 
 # define logger using the current module name as ID
 logger = logging.getLogger(__name__)
 
 
-@depreciated_class(msg="Please use class OMSessionException instead!")
+@deprecated_class(msg="Please use class OMSessionException instead!")
 class OMCSessionException(OMSessionException):
     """
     Just a compatibility layer ...
     """
 
 
-@depreciated_class(msg="Please use OMCSession*.sendExpression(...) instead!")
+@deprecated_class(msg="Please use OMCSession*.sendExpression(...) instead!")
 class OMCSessionCmd:
     """
-    Implementation of Open Modelica Compiler API functions. Depreciated!
+    Implementation of Open Modelica Compiler API functions. Deprecated!
     """
 
     def __init__(self, session: OMSessionABC, readonly: bool = False):
@@ -289,7 +289,7 @@ def getClassNames(self, className=None, recursive=False, qualified=False, sort=F
         return self._ask(question='getClassNames', opt=opt)
 
 
-@depreciated_class(msg="Please use OMCSession* classes instead!")
+@deprecated_class(msg="Please use OMCSession* classes instead!")
 class OMCSessionZMQ(OMSessionABC):
     """
     This class is a compatibility layer for the new schema using OMCSession* classes.
@@ -347,7 +347,7 @@ def execute(self, command: str):
             The unparsed OMC response.
         """
         warnings.warn(
-            message="This function is depreciated and will be removed in future versions; "
+            message="This function is deprecated and will be removed in future versions; "
                     "please use sendExpression() instead",
             category=DeprecationWarning,
             stacklevel=2,
@@ -383,35 +383,35 @@ def set_workdir(self, workdir: OMPathABC) -> None:
         return self.omc_process.set_workdir(workdir=workdir)
 
 
-@depreciated_class(msg="Please use class OMCSessionLocal instead!")
+@deprecated_class(msg="Please use class OMCSessionLocal instead!")
 class OMCProcessLocal(OMCSessionLocal):
     """
     Just a wrapper class; OMCProcessLocal => OMCSessionLocal
     """
 
 
-@depreciated_class(msg="Please use class OMCSessionPort instead!")
+@deprecated_class(msg="Please use class OMCSessionPort instead!")
 class OMCProcessPort(OMCSessionPort):
     """
     Just a wrapper class; OMCProcessPort => OMCSessionPort
     """
 
 
-@depreciated_class(msg="Please use class OMCSessionDocker instead!")
+@deprecated_class(msg="Please use class OMCSessionDocker instead!")
 class OMCProcessDocker(OMCSessionDocker):
     """
     Just a wrapper class; OMCProcessDocker => OMCSessionDocker
     """
 
 
-@depreciated_class(msg="Please use class OMCSessionDockerContainer instead!")
+@deprecated_class(msg="Please use class OMCSessionDockerContainer instead!")
 class OMCProcessDockerContainer(OMCSessionDockerContainer):
     """
     Just a wrapper class; OMCProcessDockerContainer => OMCSessionDockerContainer
     """
 
 
-@depreciated_class(msg="Please use class OMCSessionWSL instead!")
+@deprecated_class(msg="Please use class OMCSessionWSL instead!")
 class OMCProcessWSL(OMCSessionWSL):
     """
     Just a wrapper class; OMCProcessWSL => OMCSessionWSL
diff --git a/OMPython/compatibility_v400.py b/OMPython/compatibility_v400.py
index 8c869d97..408f996e 100644
--- a/OMPython/compatibility_v400.py
+++ b/OMPython/compatibility_v400.py
@@ -6,24 +6,24 @@
 from typing import Optional
 
 
-def depreciated_class(msg: Optional[str] = None):
+def deprecated_class(msg: Optional[str] = None):
     """
-    Decorator for depreciated / compatibility classes.
+    Decorator for deprecated / compatibility classes.
     """
 
-    def depreciated(cls):
+    def deprecated(cls):
         """
         Helper functions to do the decoration part.
         """
 
         class Wrapper(cls):
             """
-            Wrapper to define the depreciation message.
+            Wrapper to define the deprecation message.
             """
 
             def __init__(self, *args, **kwargs):
                 """Construct the deprecated class and emit a deprecation warning."""
-                message = f"The class {cls.__name__} is depreciated and will be removed in future versions!"
+                message = f"The class {cls.__name__} is deprecated and will be removed in future versions!"
                 if msg is not None:
                     message += f" {msg}"
 
@@ -37,4 +37,4 @@ def __init__(self, *args, **kwargs):
 
         return Wrapper
 
-    return depreciated
+    return deprecated