diff --git a/releases/signatures.txt b/releases/signatures.txt
index 14424b24..1d8da9b4 100644
--- a/releases/signatures.txt
+++ b/releases/signatures.txt
@@ -7,6 +7,10 @@ b6015f2f807bc78b6063ed6c12a12a47579a81a68f954cfc2e542e7ac6c02c0e  History-Q.md
 05228d2c59135c3fe251d877b519bec65f929ecf0aac8b727622359014236568  History-Mk4.md
 c8ad43b4e3f9d77777026da6d1210c6fc5cfe435bcfcd241c0f67c9392ad7b82  History-Mk3.md
 45cd0478996bb9da77075846122b8ba732b9b34dbbae0d12cb85ad0d931d40fc  ChangeLog.md
+495f37ce7ddaba2e9fc3f03dec582f1646f258a3d0cec5e71c04d127357b2fa3  2025-02-19T1941-v6.3.5X-mk4-coldcard.dfu
+580701fb2de24362d8de6cf998d5fd42ca9ab003aff75f3c0140d915a06a6803  2025-02-19T1941-v6.3.5X-mk4-coldcard-factory.dfu
+605ebb5acde19447e5c1d7c8cfd0302c89de5c5870d85f06b185ecab3437f94e  2025-02-19T1939-v6.3.5QX-q1-coldcard.dfu
+245db07574a535a3f068ed9a759bf0088f0d0e1e39704a0e0727f90119833602  2025-02-19T1939-v6.3.5QX-q1-coldcard-factory.dfu
 eb750a4f095eacc6133b2c8b38fe0738a22b2496a6cdf423ca865acde8c9bc4e  2025-02-13T1415-v5.4.1-mk4-coldcard.dfu
 4236453fea241fe044a462a560d8b42df43e560683110306a2714a2ef561eac5  2025-02-13T1415-v5.4.1-mk4-coldcard-factory.dfu
 2e1aad0a7a3ceb84db34322b54855a0c5496699e46e53606bfa443fcc992adec  2025-02-13T1413-v1.3.1Q-q1-coldcard.dfu
@@ -102,12 +106,12 @@ f05bc8dfed047c0c0abe5ed60621d2d14899b10717221c4af0942d96a1754f33  2021-03-29T192
 bea27f263b524a66b3ed0a58c16805e98be0d7c3db20c2f7aab3238f2c6a6995  2019-12-19T1623-v3.0.6-coldcard.dfu
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