diff --git a/ntropy_sdk/__init__.py b/ntropy_sdk/__init__.py
index 86539ad..c34be0d 100644
--- a/ntropy_sdk/__init__.py
+++ b/ntropy_sdk/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "5.2.0"
+__version__ = "5.2.1"
 
 from typing import TYPE_CHECKING, Optional
 
diff --git a/ntropy_sdk/transactions.py b/ntropy_sdk/transactions.py
index 6366572..5903dff 100644
--- a/ntropy_sdk/transactions.py
+++ b/ntropy_sdk/transactions.py
@@ -200,11 +200,11 @@ class RecurrenceType(str, enum.Enum):
 class RecurrencePeriodicity(str, enum.Enum):
     daily = "daily"
     weekly = "weekly"
-    bi_weekly = "bi_weekly"
+    bi_weekly = "bi-weekly"
     monthly = "monthly"
-    bi_monthly = "bi_monthly"
+    bi_monthly = "bi-monthly"
     quarterly = "quarterly"
-    semi_yearly = "semi_yearly"
+    semi_yearly = "semi-yearly"
     yearly = "yearly"
     other = "other"
 
diff --git a/setup.cfg b/setup.cfg
index 1cf2281..0d739a2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.2.0
+current_version = 5.2.1
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(rc(?P<pre>\d+))?
@@ -22,4 +22,3 @@ universal = 1
 exclude = docs
 
 [aliases]
-
diff --git a/setup.py b/setup.py
index 299e8c4..b00cf04 100644
--- a/setup.py
+++ b/setup.py
@@ -55,6 +55,6 @@
     test_suite="tests",
     tests_require=test_requirements,
     url="https://github.com/ntropy-network/ntropy-sdk",
-    version="5.2.0",
+    version="5.2.1",
     zip_safe=False,
 )