diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 867145d..86f67b0 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -19,7 +19,7 @@
 // own machine.
 {
   "name": "CPython 3.15.0rc1, debug build",
-  "image": "ghcr.io/tamnd/cpython-internals/cpython:debug@sha256:7baea8f3dd4de2e4c3b020543729b147e636494ae9758dabffb4675793e37170",
+  "image": "ghcr.io/tamnd/cpython-internals/cpython:debug@sha256:2ca0824fafad12440d26e792e056e17925cf4141b926d1646696266fe2e1529c",
 
   // gdb needs to attach to a process, and Docker's default seccomp profile blocks the call it
   // uses to do that. Without these two lines the debugger starts and then cannot run anything,
diff --git a/images/cpython.lock.json b/images/cpython.lock.json
index a98d137..6d84cc2 100644
--- a/images/cpython.lock.json
+++ b/images/cpython.lock.json
@@ -5,89 +5,89 @@
   "images": {
     "debug": {
       "amd64": {
-        "digest": "sha256:6ae95a549a95e610ad784052f35e44a50c164e7b9cdeb8279985a02698e513e5",
-        "built": "2026-08-31",
+        "digest": "sha256:8931b84cca7864ffc7d00141c25864eea2d7992ee4cb0b1f32e07d7b1289d11c",
+        "built": "2026-09-07",
         "size": 0
       },
       "arm64": {
-        "digest": "sha256:7d138f4a881a22412e4c40e15234f8a6df34302ba581c1687701100cce332591",
-        "built": "2026-08-31",
+        "digest": "sha256:40b26d441ad1185303d6f9e8467878dd253780375f8ae23f96a7c82e1a6a3e25",
+        "built": "2026-09-07",
         "size": 0
       }
     },
     "freethreaded": {
       "amd64": {
-        "digest": "sha256:aa0d69b1f72f88d311ff0e3cac90ab1c461e1bc6d6682a3c663b46a0e306a6e5",
-        "built": "2026-08-31",
+        "digest": "sha256:b48f892bfb6ea2063df8303139e463914d43f8da447b50f3acdd9b6f81ce4d67",
+        "built": "2026-09-07",
         "size": 0
       },
       "arm64": {
-        "digest": "sha256:ad567a3c4b6e2bf6da384c70765befd30ea59cd06b65563b2750bc83ace3c554",
-        "built": "2026-08-31",
+        "digest": "sha256:847642dcd51dab69d0e024121ab6ba071f9d9727982fc49f750b680ce9fcf064",
+        "built": "2026-09-07",
         "size": 0
       }
     },
     "jit": {
       "amd64": {
-        "digest": "sha256:5ef434298ec1e128e21bf8260e84d32e48ce5d4c6b1df8a254b544d082c8027e",
-        "built": "2026-08-31",
+        "digest": "sha256:7b119b5e905ca2014b16e12653bbcec8e39e01cbe3232d321de2ff42770b87ad",
+        "built": "2026-09-07",
         "size": 0
       },
       "arm64": {
-        "digest": "sha256:1400137f3e46a86b2ac83fc0c500675e358caff67cfb2afae337678074c489ce",
-        "built": "2026-08-31",
+        "digest": "sha256:1f71d3fcf7928e96a1a5530646a78ec1f48e33395f73b0eb497ffede17ad30e6",
+        "built": "2026-09-07",
         "size": 0
       }
     },
     "release": {
       "amd64": {
-        "digest": "sha256:77f2fb432f8da2151ab8466580846cfc85fffd0331c27290b45fe52c1244df35",
-        "built": "2026-08-31",
+        "digest": "sha256:f3dd8b1f060334d118e92284cef0149302d8bf43a4b960a01c19b5ea3b70d831",
+        "built": "2026-09-07",
         "size": 0
       },
       "arm64": {
-        "digest": "sha256:177697c75a931fd68deed4c29f5112675f78b117e7db57f608952ee92fc45e2c",
-        "built": "2026-08-31",
+        "digest": "sha256:f38752e9752da68daac2970c25557906f8f23910241f787cba5673feee136dce",
+        "built": "2026-09-07",
         "size": 0
       }
     },
     "tailcall": {
       "amd64": {
-        "digest": "sha256:d7e4abd234eb4331352e6b2c5380456cfa864fd4e42173a6bab8965a20bce808",
-        "built": "2026-08-31",
+        "digest": "sha256:a3d4c25f79de40303b23785d82bb1cafde7153444382d8f38aeebc8ef7fa89f0",
+        "built": "2026-09-07",
         "size": 0
       },
       "arm64": {
-        "digest": "sha256:06d84df644d64b9e6d9c721245b8fccbbd466671651833ffbb34aa44f997418f",
-        "built": "2026-08-31",
+        "digest": "sha256:a957c02db3bf57ff1447a8ef4f22beaa6edba3cf0d142c1751f3c7d15d5aebf8",
+        "built": "2026-09-07",
         "size": 0
       }
     }
   },
   "indexes": {
     "debug": {
-      "digest": "sha256:7baea8f3dd4de2e4c3b020543729b147e636494ae9758dabffb4675793e37170",
-      "built": "2026-08-31",
+      "digest": "sha256:2ca0824fafad12440d26e792e056e17925cf4141b926d1646696266fe2e1529c",
+      "built": "2026-09-07",
       "size": 0
     },
     "freethreaded": {
-      "digest": "sha256:db72284e3a49f43c38b96bec2baed1380b8348e27ea6f54f6e8d0810b59c3144",
-      "built": "2026-08-31",
+      "digest": "sha256:bb5745d40cb7fdfd51533b456380a0d5ffe861aa699e12e76f37ca03b733fb2a",
+      "built": "2026-09-07",
       "size": 0
     },
     "jit": {
-      "digest": "sha256:5f5383fc23837e7b3ea7792bd94cc8fa5c4cc436d8f7fc8ff5f854eab4eb7ccb",
-      "built": "2026-08-31",
+      "digest": "sha256:05288f9a45657bc6329813378495af891ffdf1c118499fdbab47c3e9b4bb9844",
+      "built": "2026-09-07",
       "size": 0
     },
     "release": {
-      "digest": "sha256:fb55d6afcf053c974de6447fafbd2be6af20cdb9f596e25a0445607b8af981e3",
-      "built": "2026-08-31",
+      "digest": "sha256:966a4ce35b8d3ca26985aff05b0f938a5dbdc2fc9d3e2c6579de060d4039fc60",
+      "built": "2026-09-07",
       "size": 0
     },
     "tailcall": {
-      "digest": "sha256:e598c8e7336a48053f4b744fd28cd1e01b2d5bf4281629380afd9d06b7d7428a",
-      "built": "2026-08-31",
+      "digest": "sha256:cfb666d5596646f1c954ffa79d0a1b71e5501881352f3aec50c78cd6fc40cdd2",
+      "built": "2026-09-07",
       "size": 0
     }
   }