diff --git a/IN0.csv b/IN0.csv
index 437630b..99d05e0 100644
--- a/IN0.csv
+++ b/IN0.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN000126C010,CENTRAL GOVERNMENT LOAN 14373 02JAN2026 C STRIPS FV RS 100,null,GOVERNMENT SECURITIES,ACTIVE
 IN000127C018,CENTRAL GOVERNMENT LOAN 14375 02JAN2027 C STRIPS FV RS 100,null,GOVERNMENT SECURITIES,ACTIVE
 IN000128C016,CENTRAL GOVERNMENT LOAN 14377 02JAN2028 C STRIPS FV RS 100,null,GOVERNMENT SECURITIES,ACTIVE
diff --git a/IN1.csv b/IN1.csv
index 41a0f1f..2a84dd0 100644
--- a/IN1.csv
+++ b/IN1.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN1020040045,STATE DEVELOPMENT LOAN 04318 AP 04NV14 7.36 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,BLOCKED DUE TO ACA
 IN1020040078,STATE DEVELOPMENT LOAN 05221 AP 24FB17 7.17 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
 IN1020060068,STATE DEVELOPMENT LOAN 07206 AP 23FB17 8.17 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,BLOCKED DUE TO ACA
diff --git a/IN2.csv b/IN2.csv
index e4fc0db..4ffeaf3 100644
--- a/IN2.csv
+++ b/IN2.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN2020040068,STATE DEVELOPMENT LOAN 05226 KER 24FB17 7.17 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,BLOCKED DUE TO ACA
 IN2020060074,STATE DEVELOPMENT LOAN 07209 KER 23FB17 8.19 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
 IN2020070016,STATE DEVELOPMENT LOAN 07229 KER 11MY17 8.34 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
diff --git a/IN3.csv b/IN3.csv
index 5e028b9..d87c08b 100644
--- a/IN3.csv
+++ b/IN3.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN3020040041,STATE DEVELOPMENT LOAN 05233 SKM 24FB17 7.17 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
 IN3020070014,STATE DEVELOPMENT LOAN 05011 SKM 21SP17 8.2 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
 IN3020070022,STATE DEVELOPMENT LOAN 05608 SKM 18FB18 8.02 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,DELETED
diff --git a/IN4.csv b/IN4.csv
index c9d1ee0..26f0515 100644
--- a/IN4.csv
+++ b/IN4.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN4520140018,STATE DEVELOPMENT LOAN 17127 TLG 10SP24 9.06 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,ACTIVE
 IN4520140026,STATE DEVELOPMENT LOAN 17194 TLG 16OT24 8.89 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,ACTIVE
 IN4520140034,STATE DEVELOPMENT LOAN 17243 TLG 12NV24 8.46 FV RS 100,STATE DEVELOPMENT LOAN,GOVERNMENT SECURITIES,ACTIVE
diff --git a/IN9.csv b/IN9.csv
index a33c237..d517821 100644
--- a/IN9.csv
+++ b/IN9.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 IN9002A01024,RELIANCE INDUSTRIES LIMITED EQ PP RS. 2.50/-,RELIANCE INDUSTRIES LIMITED,EQUITY SHARES,SUSPENDED
 IN9002A01032,RELIANCE INDUSTRIES LIMITED EQ NEW PP RS. 5/-,RELIANCE INDUSTRIES LIMITED,EQUITY SHARES,SUSPENDED
 IN9002B01014,SOFTSOL INDIA LIMITED PP PRODIV 310500,SOFTSOL INDIA LIMITED,EQUITY SHARES,BLOCKED DUE TO ACA
diff --git a/INE.csv b/INE.csv
index 0e43849..582fb34 100644
--- a/INE.csv
+++ b/INE.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 INE001A01036,HOUSING DEVELOPMENT FINANCE CORPORATION LTD EQ NEW F.V. RS.2/-,HOUSING DEVELOPMENT FINANCE CORPORATION LTD,EQUITY SHARES,ACTIVE
 INE001A07629,HOUSING DEVELOPMENT FINANCE CORPORATION LTD SR-40/C4 BR BD 10JU17 FV RS 5 LAC,HOUSING DEVELOPMENT FINANCE CORPORATION LTD,BOND,DELETED
 INE001A07637,HOUSING DEVELOPMENT FINANCE CORPORATION LTD SR-40/C5 BR BD 10DC17 FV RS 5 LAC,HOUSING DEVELOPMENT FINANCE CORPORATION LTD,BOND,DELETED
diff --git a/INF.csv b/INF.csv
index d0027eb..482d75a 100644
--- a/INF.csv
+++ b/INF.csv
@@ -1,3 +1,4 @@
+ISIN,Description,Issuer,Type,Status
 INF00XX01010,ITI MUTUAL FUND LIQUID FUND REG GROWTH,ITI MUTUAL FUND,MUTUAL FUND UNIT (TRASE),DELETED
 INF00XX01028,ITI MUTUAL FUND LIQUID FUND REG DAILY DIVI REINV,ITI MUTUAL FUND,MUTUAL FUND UNIT (TRASE),DELETED
 INF00XX01036,ITI MUTUAL FUND LIQUID FUND REG WEEKLY DIVI REINV,ITI MUTUAL FUND,MUTUAL FUND UNIT (TRASE),DELETED
diff --git a/fetch.sh b/fetch.sh
index 076dd5f..ef213d7 100755
--- a/fetch.sh
+++ b/fetch.sh
@@ -53,7 +53,6 @@ CLASS="$1"
 
 total=$(fetch_total_pages "$CLASS")
 echo "::group::$CLASS (Total=$total)"
-cp header.csv "$CLASS.csv"
 fetch_class "$CLASS" $total
 echo "::endgroup::"
 
@@ -65,6 +64,10 @@ sort -o "$CLASS.csv" "$CLASS.csv"
 # This is to avoid ISINs like INF955L01IN9 showing up under IN9
 sed -i "/^$CLASS/!d" "$CLASS.csv"
 
+# Now add a header
+cat header.csv $CLASS.csv > tmp.csv
+mv tmp.csv $CLASS.csv
+
 # Update CITATION
 if [[ $(git diff --stat *.csv) != '' ]]; then
   sed -i "s/^version.*/version: $1/" CITATION.cff