diff --git a/pkgs/development/libraries/glibc/common.nix b/pkgs/development/libraries/glibc/common.nix
index 32c1b3647372..7128f5606193 100644
--- a/pkgs/development/libraries/glibc/common.nix
+++ b/pkgs/development/libraries/glibc/common.nix
@@ -10,8 +10,8 @@ cross:
 , preConfigure ? "", ... }@args:
 
 let
-  version = "2.24";
-  sha256 = "1ghzp41ryvsqxn4rhrm8r25wc33m2jf8zrcc1pj3jxyk8ad9a0by";
+  version = "2.25";
+  sha256 = "067bd9bb3390e79aa45911537d13c3721f1d9d3769931a30c2681bfee66f23a0";
 in
 
 assert cross != null -> gccCross != null;
@@ -138,7 +138,7 @@ stdenv.mkDerivation ({
     lib.optionalString (cross != null) "-${cross.config}";
 
   src = fetchurl {
-    url = "mirror://gnu/glibc/glibc-${version}.tar.gz";
+    url = "mirror://gnu/glibc/glibc-${version}.tar.xz";
     inherit sha256;
   };
 
diff --git a/pkgs/development/libraries/glibc/default.nix b/pkgs/development/libraries/glibc/default.nix
index d6c496819da5..12996e1b9221 100644
--- a/pkgs/development/libraries/glibc/default.nix
+++ b/pkgs/development/libraries/glibc/default.nix
@@ -52,6 +52,7 @@ in
           # the .so It used to be a symlink, but now it is a script
           cp -a ${stdenv.cc.cc}/lib/libgcc_s.so $out/lib/libgcc_s.so
       fi
+      set -x
     '';
 
     postInstall = ''
@@ -81,7 +82,7 @@ in
       # to bootstrap-tools; on cross-arm this stripping would break objects.
       if [ -z "$crossConfig" ]; then
         for i in "$out"/lib/*.a; do
-            strip -S "$i"
+            [ "$i" = "$out/lib/libm.a" ] || strip -S "$i"
         done
       fi