diff --git a/changes/pr-431.md b/changes/pr-431.md
new file mode 100644
index 000000000..3af9ce2fb
--- /dev/null
+++ b/changes/pr-431.md
@@ -0,0 +1 @@
+[signals-cpp] Expose zeroized objects and norms from signal class
diff --git a/flake.lock b/flake.lock
index 77b1e9bd9..e5d347965 100644
--- a/flake.lock
+++ b/flake.lock
@@ -526,11 +526,11 @@
     "pysignals": {
       "flake": false,
       "locked": {
-        "lastModified": 1735182553,
-        "narHash": "sha256-qOV2F0Jw5KuUICKv65uMW3aRGTWqj6Eudg3NFjEb6ts=",
+        "lastModified": 1766781420,
+        "narHash": "sha256-lkXATLuWtUU3q2cTcSL8sbgf78CX/BgiwT+EOB/pL6Y=",
         "owner": "goromal",
         "repo": "pysignals",
-        "rev": "11d6532e27122b12238af99554535f9cfb138df6",
+        "rev": "55c464a90ad44dad8ca963158430fa2da5dc7b67",
         "type": "github"
       },
       "original": {
@@ -707,11 +707,11 @@
     "signals-cpp": {
       "flake": false,
       "locked": {
-        "lastModified": 1735182528,
-        "narHash": "sha256-Gj6E/vaW/xQC3pIYm1A+Zj5Rza7m2iuhA2faM1Fm1Tc=",
+        "lastModified": 1766780194,
+        "narHash": "sha256-S/f3zyZZ26Q2s2jOl+/RLSMzMa4RT1YT9BYyV/eqbJ8=",
         "owner": "goromal",
         "repo": "signals-cpp",
-        "rev": "3b1cdfe2ce66f96095b762673d7ffc2ef1f666ea",
+        "rev": "3e3fa06a6ab91cb4817285dcaed066307c80f3c0",
         "type": "github"
       },
       "original": {