diff --git a/pkgs/by-name/co/cowsql/37.patch b/pkgs/by-name/co/cowsql/37.patch
new file mode 100644
index 000000000000..9f7eb84afc35
--- /dev/null
+++ b/pkgs/by-name/co/cowsql/37.patch
@@ -0,0 +1,57 @@
+From c0d7c99632ea2ee01066988708cbb41f335cbdc3 Mon Sep 17 00:00:00 2001
+From: Brahmajit Das <listout@listout.xyz>
+Date: Sat, 14 Jun 2025 00:18:38 +0530
+Subject: [PATCH] src/lib/serialize.h: don't define double as float_t
+
+libuv with commit 85b526f makes uv.h include math.h for the definitions
+of NAN/INFINITY. That header also defines the ISO C standard float_t
+type. Now that that definition is in scope, the cowsql definition in
+src/lib/serialize.h conflicts with it.
+
+Fixes: 451cff63b29366237a9502823299b05bbff8662b
+Closes: https://github.com/cowsql/cowsql/issues/35
+Signed-off-by: Brahmajit Das <listout@listout.xyz>
+---
+ src/lib/serialize.h | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/lib/serialize.h b/src/lib/serialize.h
+index 9fbd49c..a7f9147 100644
+--- a/src/lib/serialize.h
++++ b/src/lib/serialize.h
+@@ -37,7 +37,7 @@ static_assert(sizeof(double) == sizeof(uint64_t),
+  * Basic type aliases to used by macro-based processing.
+  */
+ typedef const char *text_t;
+-typedef double float_t;
++typedef double cowsql_float;
+ typedef uv_buf_t blob_t;
+ 
+ /**
+@@ -143,7 +143,7 @@ COWSQL_INLINE size_t int64__sizeof(const int64_t *value)
+ 	return sizeof(int64_t);
+ }
+ 
+-COWSQL_INLINE size_t float__sizeof(const float_t *value)
++COWSQL_INLINE size_t float__sizeof(const cowsql_float *value)
+ {
+ 	(void)value;
+ 	return sizeof(double);
+@@ -190,7 +190,7 @@ COWSQL_INLINE void int64__encode(const int64_t *value, void **cursor)
+ 	*cursor += sizeof(int64_t);
+ }
+ 
+-COWSQL_INLINE void float__encode(const float_t *value, void **cursor)
++COWSQL_INLINE void float__encode(const cowsql_float *value, void **cursor)
+ {
+ 	*(uint64_t *)(*cursor) = ByteFlipLe64(*(uint64_t *)value);
+ 	*cursor += sizeof(uint64_t);
+@@ -273,7 +273,7 @@ COWSQL_INLINE int int64__decode(struct cursor *cursor, int64_t *value)
+ 	return 0;
+ }
+ 
+-COWSQL_INLINE int float__decode(struct cursor *cursor, float_t *value)
++COWSQL_INLINE int float__decode(struct cursor *cursor, cowsql_float *value)
+ {
+ 	size_t n = sizeof(double);
+ 	if (n > cursor->cap) {
diff --git a/pkgs/by-name/co/cowsql/package.nix b/pkgs/by-name/co/cowsql/package.nix
index e9fd022b8b74..f7e19e77757e 100644
--- a/pkgs/by-name/co/cowsql/package.nix
+++ b/pkgs/by-name/co/cowsql/package.nix
@@ -22,6 +22,12 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-rwTa9owtnkyI9OpUKLk6V7WbAkqlYucpGzPnHHvKW/A=";
   };
 
+  patches = [
+    # fix libuv changes. review removal in > 1.15.8
+    # https://github.com/cowsql/cowsql/pull/37
+    ./37.patch
+  ];
+
   nativeBuildInputs = [
     autoreconfHook
     pkg-config