1 files changed, 4 insertions, 3 deletions
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index 69a8318127..58856839e1 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -179,8 +179,9 @@ class Config:
 
         If an integer is provided it is treated as bytes and is unchanged.
 
-        String byte sizes can have a suffix of 'K' or `M`, representing kibibytes and
-        mebibytes respectively. No suffix is understood as a plain byte count.
+        String byte sizes can have a suffix of 'K', `M`, `G` or `T`,
+        representing kibibytes, mebibytes, gibibytes and tebibytes respectively.
+        No suffix is understood as a plain byte count.
 
         Raises:
             TypeError, if given something other than an integer or a string
@@ -189,7 +190,7 @@ class Config:
         if type(value) is int:  # noqa: E721
             return value
         elif isinstance(value, str):
-            sizes = {"K": 1024, "M": 1024 * 1024}
+            sizes = {"K": 1024, "M": 1024 * 1024, "G": 1024**3, "T": 1024**4}
             size = 1
             suffix = value[-1]
             if suffix in sizes: