diff --git a/pkgs/development/compilers/tinygo/0002-Add-clang-header-path.patch b/pkgs/development/compilers/tinygo/0002-Add-clang-header-path.patch
index 54e389fe1401..7e4c8eded677 100644
--- a/pkgs/development/compilers/tinygo/0002-Add-clang-header-path.patch
+++ b/pkgs/development/compilers/tinygo/0002-Add-clang-header-path.patch
@@ -18,18 +18,18 @@ index 121398fa..a589988b 100644
  	sourceDir: func() string {
  		llvmDir := filepath.Join(goenv.Get("TINYGOROOT"), "llvm-project/compiler-rt/lib/builtins")
 diff --git a/builder/picolibc.go b/builder/picolibc.go
-index f1b061ae..159f90cf 100644
+index d0786ee3..9a5cf9b0 100644
 --- a/builder/picolibc.go
 +++ b/builder/picolibc.go
-@@ -27,7 +27,7 @@ var Picolibc = Library{
- 			"-D_COMPILING_NEWLIB",
- 			"-DHAVE_ALIAS_ATTRIBUTE",
- 			"-DTINY_STDIO",
+@@ -30,7 +30,7 @@ var Picolibc = Library{
+ 			"-D_IEEE_LIBM",
+ 			"-D__OBSOLETE_MATH_FLOAT=1", // use old math code that doesn't expect a FPU
+ 			"-D__OBSOLETE_MATH_DOUBLE=0",
 -			"-nostdlibinc",
 +			"-isystem", "@clang_include@",
- 			"-isystem", picolibcDir + "/include",
- 			"-I" + picolibcDir + "/tinystdio",
- 			"-I" + headerPath,
+ 			"-isystem", newlibDir + "/libc/include",
+ 			"-I" + newlibDir + "/libc/tinystdio",
+ 			"-I" + newlibDir + "/libm/common",
 diff --git a/compileopts/config.go b/compileopts/config.go
 index a006b673..3a105b49 100644
 --- a/compileopts/config.go
diff --git a/pkgs/development/compilers/tinygo/default.nix b/pkgs/development/compilers/tinygo/default.nix
index 43b981ffd068..2f6eb98be286 100644
--- a/pkgs/development/compilers/tinygo/default.nix
+++ b/pkgs/development/compilers/tinygo/default.nix
@@ -28,17 +28,17 @@ in
 
 buildGoModule rec {
   pname = "tinygo";
-  version = "0.25.0";
+  version = "0.26.0";
 
   src = fetchFromGitHub {
     owner = "tinygo-org";
     repo = "tinygo";
     rev = "v${version}";
-    sha256 = "sha256-Rxdxum1UIaz8tpEAGqpLvKd25nHdj4Se+IoN29EJEHg=";
+    sha256 = "rI8CADPWKdNvfknEsrpp2pCeZobf9fAp0GDIWjupzZA=";
     fetchSubmodules = true;
   };
 
-  vendorSha256 = "sha256-QxLY4KT05PtA/W7d1vKxsq5w35YZ6MJL3Lh726b+E9w=";
+  vendorSha256 = "sha256-ihQd/RAjAQhgQZHbNiWmAD0eOo1MvqAR/OwIOUWtdAM=";
 
   patches = [
     ./0001-Makefile.patch