diff --git a/mailman-support-sqlalchemy-1-4.patch b/mailman-support-sqlalchemy-1-4.patch
new file mode 100644
index 0000000..cb2f5f0
--- /dev/null
+++ b/mailman-support-sqlalchemy-1-4.patch
@@ -0,0 +1,71 @@
+The TypeDecorator.cache_ok class-level flag indicates if this custom
+TypeDecorator is safe to be used as part of a cache key. This flag defaults to
+None which will initially generate a warning when the SQL compiler attempts to
+generate a cache key for a statement that uses this type. If the TypeDecorator
+is not guaranteed to produce the same bind/result behavior and SQL generation
+every time, this flag should be set to False; otherwise if the class produces
+the same behavior each time, it may be set to True. See TypeDecorator.cache_ok
+for further notes on how this works.
+
+As I don't know if those can be safely cached, just disable the warning.
+
+Index: mailman-3.3.5/src/mailman/database/types.py
+===================================================================
+--- mailman-3.3.5.orig/src/mailman/database/types.py	2021-09-06 02:19:59.000000000 +0200
++++ mailman-3.3.5/src/mailman/database/types.py	2022-06-23 08:57:19.527825754 +0200
+@@ -34,6 +34,7 @@ class Enum(TypeDecorator):
+     converts it on-the-fly.
+     """
+     impl = Integer
++    cache_ok = False
+ 
+     def __init__(self, enum, *args, **kw):
+         super().__init__(*args, **kw)
+@@ -59,6 +60,7 @@ class UUID(TypeDecorator):
+ 
+     """
+     impl = CHAR
++    cache_ok = False
+ 
+     def load_dialect_impl(self, dialect):
+         if dialect.name == 'postgresql':
+@@ -97,6 +99,7 @@ class SAUnicode(TypeDecorator):
+     column needs to be indexed, otherwise use SAUnicode4Byte.
+     """
+     impl = Unicode
++    cache_ok = False
+ 
+ 
+ @compiles(SAUnicode)
+@@ -120,6 +123,7 @@ class SAUnicode4Byte(TypeDecorator):
+     type and it can still be used if needed in the codebase.
+     """
+     impl = Unicode
++    cache_ok = False
+ 
+ 
+ @compiles(SAUnicode4Byte)
+@@ -140,6 +144,7 @@ class SAUnicodeLarge(TypeDecorator):
+     This is double size of SAUnicode defined above.
+     """
+     impl = Unicode
++    cache_ok = False
+ 
+ 
+ @compiles(SAUnicodeLarge, 'mysql')
+@@ -166,6 +171,7 @@ class SAUnicodeXL(TypeDecorator):
+     See https://docs.sqlalchemy.org/en/latest/dialects/mysql.html#index-length
+     """
+     impl = Unicode
++    cache_ok = False
+ 
+ 
+ @compiles(SAUnicodeXL, 'mysql')
+@@ -187,6 +193,7 @@ class SAText(TypeDecorator):
+     case of other dialects defaults to the Text type.
+     """
+     impl = Text
++    cache_ok = False
+ 
+ 
+ @compiles(SAText)
diff --git a/python-mailman.changes b/python-mailman.changes
index 0b6507d..cf950ef 100644
--- a/python-mailman.changes
+++ b/python-mailman.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Wed Jun 29 18:14:25 UTC 2022 - Lars Vogdt <lars@linux-schulserver.de>
+
+- added mailman-support-sqlalchemy-1-4.patch (from Andreas Schneider):
+  The TypeDecorator.cache_ok class-level flag indicates if this custom
+  TypeDecorator is safe to be used as part of a cache key. This flag defaults to
+  None which will initially generate a warning when the SQL compiler attempts to
+  generate a cache key for a statement that uses this type. If the TypeDecorator
+  is not guaranteed to produce the same bind/result behavior and SQL generation
+  every time, this flag should be set to False; otherwise if the class produces
+  the same behavior each time, it may be set to True. See TypeDecorator.cache_ok
+  for further notes on how this works.
+
 -------------------------------------------------------------------
 Mon Jun 13 09:09:17 UTC 2022 - Andreas Schneider <asn@cryptomilk.org>
 
diff --git a/python-mailman.spec b/python-mailman.spec
index b8aa9c5..95b5fc1 100644
--- a/python-mailman.spec
+++ b/python-mailman.spec
@@ -70,6 +70,8 @@ Patch2:         support-alembic-1-8.patch
 # PATCH-FIX-UPSTREAM ARC-message-fail-tests.patch bsc#[0-9]+ mcepl@suse.com
 # this patch makes things totally awesome
 Patch3:         ARC-message-fail-tests.patch
+# Disable cache_ok warnings on console messages: disable caching completely at the moment
+Patch4:         mailman-support-sqlalchemy-1-4.patch
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildArch:      noarch