diff --git a/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/chiado.yaml b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/chiado.yaml
index 3b83d3453d4..b03db8ccd45 100644
--- a/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/chiado.yaml
+++ b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/chiado.yaml
@@ -49,6 +49,12 @@ DENEB_FORK_EPOCH: 516608 # Wed Jan 31 2024 18:15:40 GMT+0000
 # Electra
 ELECTRA_FORK_VERSION: 0x0500006f
 ELECTRA_FORK_EPOCH: 948224  # Mar-06-2025 09:43:40 GMT+0000
+# Fulu
+FULU_FORK_VERSION: 0x0600006f
+FULU_FORK_EPOCH: 1353216  # Mon Mar 16 2026 09:33:00 GMT+0000
+# Gloas
+GLOAS_FORK_VERSION: 0x0700006f
+GLOAS_FORK_EPOCH: 18446744073709551615
 
 
 # Time parameters
@@ -164,4 +170,15 @@ MAX_REQUEST_BLOB_SIDECARS_ELECTRA: 256
 # Blob Scheduling
 # ---------------------------------------------------------------
 
+# Fulu
+NUMBER_OF_CUSTODY_GROUPS: 128
+DATA_COLUMN_SIDECAR_SUBNET_COUNT: 128
+MAX_REQUEST_DATA_COLUMN_SIDECARS: 16384
+SAMPLES_PER_SLOT: 8
+CUSTODY_REQUIREMENT: 4
+VALIDATOR_CUSTODY_REQUIREMENT: 8
+BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
+# `2**14` (= 16384 epochs, ~18 days)
+MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 16384
+
 BLOB_SCHEDULE: []
\ No newline at end of file
diff --git a/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/presets/gnosis/fulu.yaml b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/presets/gnosis/fulu.yaml
new file mode 100644
index 00000000000..9ecb293216a
--- /dev/null
+++ b/ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/presets/gnosis/fulu.yaml
@@ -0,0 +1,17 @@
+# Gnosis preset - Fulu
+
+# Networking
+# ---------------------------------------------------------------
+# floorlog2(get_generalized_index(BeaconBlockBody, 'blob_kzg_commitments') (= 4)
+KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH: 4
+
+# Blob
+# ---------------------------------------------------------------
+# 2**6 (= 64) field elements
+FIELD_ELEMENTS_PER_CELL: 64
+# 2**1 * FIELD_ELEMENTS_PER_BLOB (= 8,192) field elements
+FIELD_ELEMENTS_PER_EXT_BLOB: 8192
+# FIELD_ELEMENTS_PER_EXT_BLOB // FIELD_ELEMENTS_PER_CELL (= 128) cells
+CELLS_PER_EXT_BLOB: 128
+# CELLS_PER_EXT_BLOB (= 128) columns
+NUMBER_OF_COLUMNS: 128