diff --git a/recipes/blast-legacy/2.2.26/fix-osx-build.patch b/recipes/blast-legacy/2.2.26/fix-osx-build.patch
index a297ebd103209..0edf78005c26c 100644
--- a/recipes/blast-legacy/2.2.26/fix-osx-build.patch
+++ b/recipes/blast-legacy/2.2.26/fix-osx-build.patch
@@ -44,12 +44,12 @@
 +++ ncbi/corelib/ncbimisc.c	2021-05-21 18:20:54.000000000 -0700
 @@ -1266,7 +1266,7 @@
    if (len < 1) return NULL;
- 
+
    rsult = (Nlm_CharPtr) MemNew (len + 3);
 -  if (rsult == NULL) return;
 +  if (rsult == NULL) return NULL;
    tmp = rsult;
- 
+
    for (i = 0; /* local [i] != NULL */ i < numitems; i++) {
 --- ncbi/make/makedis.csh.orig	2021-05-25 19:09:16.000000000 -0700
 +++ ncbi/make/makedis.csh	2021-05-25 19:32:11.000000000 -0700
@@ -75,18 +75,92 @@
 @@ -300,7 +299,7 @@
  echo platform is $platform
  uname -a
- 
+
 -set NCBI_DOT_MK = ncbi/platform/${platform}.ncbi.mk
 +set NCBI_DOT_MK = platform/${platform}.ncbi.mk
- 
+
  if (! -r "$NCBI_DOT_MK") then
    goto BADPLATFORM
 @@ -323,7 +322,7 @@
      echo "Enabling assert()."
  endif
- 
+
 -cd ncbi/build
 +cd build
  ln -s ../make/*.unx .
  ln -s ../make/ln-if-absent .
  mv makeall.unx makefile
+--- ncbi/corelib/ncbimain.c.orig	2002-07-09 09:20:17
++++ ncbi/corelib/ncbimain.c	2024-09-18 14:28:01
+@@ -75,7 +75,7 @@
+ *     setups argc and argv
+ *
+ *****************************************************************************/
+-#ifdef OS_MSWIN
++#if defined OS_MSWIN || defined OS_UNIX_DARWIN
+ int
+ #endif
+ main(int argc, char *argv[])
+--- ncbi/tools/kappa.c.orig	2012-04-30 06:45:01
++++ ncbi/tools/kappa.c	2024-09-18 14:58:32
+@@ -2197,7 +2197,7 @@
+ /**
+  * Callbacks used by Blast_RedoOneMatch and
+  * Blast_RedoOneMatchSmithWaterman */
+-static const Blast_RedoAlignCallbacks
++static const Blast_RedoAlignCallbacks *
+ redo_align_callbacks = {
+     Kappa_CalcLambda,
+     Kappa_SequenceGetRange,
+--- ncbi/tools/ncbisort.c.orig	2006-05-10 14:47:17
++++ ncbi/tools/ncbisort.c	2024-09-18 14:40:01
+@@ -689,7 +689,7 @@
+    of the fraction.  Strings not of this form are considered to be zero. */
+ static Int4 SORTFracCompare(register UcharPtr a, register UcharPtr b)
+ {
+-  register tmpa = UCHAR(*a), tmpb = UCHAR(*b);
++  register int tmpa = UCHAR(*a), tmpb = UCHAR(*b);
+
+   if (tmpa == '.' && tmpb == '.') {
+     do
+--- ncbi/tools/pattern1.c.orig	2006-08-04 15:11:17
++++ ncbi/tools/pattern1.c	2024-09-18 14:42:18
+@@ -741,7 +741,7 @@
+
+ /*Do a word-by-word bit-wise or of a and b and put the result in
+   result; return 1 if there are any non-zero words*/
+-static and(Int4 *result, Int4 *a, Int4 *b, patternSearchItems *patternSearch)
++static Int4 and(Int4 *result, Int4 *a, Int4 *b, patternSearchItems *patternSearch)
+ {
+     Int4 i; /*index over words*/
+     Int4 returnValue = 0;
+--- ncbi/api/asn2ff4.c.orig	2001-10-02 10:13:15
++++ ncbi/api/asn2ff4.c	2024-09-18 14:36:13
+@@ -1344,7 +1344,7 @@
+ *	Compare two ImpFeats by name and location
+ *	returns 1 for matching features otherwise returns 0
+ ******************************************************************************/
+-static CmpImpFeat (ImpFeatPtr f1, ImpFeatPtr f2)
++static int CmpImpFeat (ImpFeatPtr f1, ImpFeatPtr f2)
+ {
+     if (f1 == NULL && f2)
+ 		return 0;
+--- ncbi/api/asn2ff2.c.orig	2024-09-18 22:02:18
++++ ncbi/api/asn2ff2.c	2024-09-18 22:36:29
+@@ -220,6 +220,7 @@
+ #include <utilpub.h>
+ #include <ffprint.h>
+ #include <seqmgr.h>
++#include <stdbool.h>
+ 
+ 
+ NLM_EXTERN Int2 GetGenDate PROTO ((Asn2ffJobPtr ajp, GBEntryPtr gbp, CharPtr buffer));
+@@ -1355,7 +1356,7 @@
+ 	return newstring;
+ }
+ 
+-static ChoicePID(SeqIdPtr sid) 
++static bool ChoicePID(SeqIdPtr sid) 
+ {
+ 	
+ 	DbtagPtr db;
diff --git a/recipes/blast-legacy/2.2.26/meta.yaml b/recipes/blast-legacy/2.2.26/meta.yaml
index 1138152050e28..be2f140d0a9a9 100644
--- a/recipes/blast-legacy/2.2.26/meta.yaml
+++ b/recipes/blast-legacy/2.2.26/meta.yaml
@@ -10,7 +10,9 @@ source:
     patches:
       - fix-osx-build.patch                                                                                             # [osx]
 build:
-  number: 3
+  number: 4
+  run_exports:
+    - {{ pin_subpackage('blast-legacy', max_pin='x.x') }}
 
 test:
   commands: