diff --git a/Deep-Verification-Base.md b/Deep-Verification-Base.md
index c91ed65..401e554 100644
--- a/Deep-Verification-Base.md
+++ b/Deep-Verification-Base.md
@@ -4,6 +4,7 @@ Updates:
 * [[2018-12-31 First functional implementation of a netlist extractor|2018-12-31]]
 * [[2019-01-07 Stable implemenation + performance improvements, additional functionality|2019-01-07]]
 * [[2019-01-19 Persistence and some reworks|2019-01-19]]
+* [[2019-02-01 SPICE writer and more improvements|2019-02-01]]
 
 # The problem