diff --git a/changelogs/nightly/focal b/changelogs/nightly/focal
index 02b9ca5..a96a1b4 100644
--- a/changelogs/nightly/focal
+++ b/changelogs/nightly/focal
@@ -1,3 +1,9 @@
+python3.12 (3.12.8-85-gadddbc3de9-1+focal1) focal; urgency=medium
+
+  * Update to v3.12.8-85-gadddbc3de9.
+
+ -- Anthony Sottile (deadsnakes) <asottile+deadsnakes@umich.edu>  Tue, 07 Jan 2025 08:50:25 +0000
+
 python3.12 (3.12.8-78-g4016be2775-1+focal1) focal; urgency=medium
 
   * Update to v3.12.8-78-g4016be2775.
diff --git a/changelogs/nightly/jammy b/changelogs/nightly/jammy
index a3869fd..4957a58 100644
--- a/changelogs/nightly/jammy
+++ b/changelogs/nightly/jammy
@@ -1,3 +1,9 @@
+python3.12 (3.12.8-85-gadddbc3de9-1+jammy1) jammy; urgency=medium
+
+  * Update to v3.12.8-85-gadddbc3de9.
+
+ -- Anthony Sottile (deadsnakes) <asottile+deadsnakes@umich.edu>  Tue, 07 Jan 2025 08:50:24 +0000
+
 python3.12 (3.12.8-78-g4016be2775-1+jammy1) jammy; urgency=medium
 
   * Update to v3.12.8-78-g4016be2775.
diff --git a/cpython b/cpython
index 4016be2..adddbc3 160000
--- a/cpython
+++ b/cpython
@@ -1 +1 @@
-Subproject commit 4016be27755ef6d0cb8cd11e0625b97fafaccf0f
+Subproject commit adddbc3de95154c7ccc3af80d9f4d57abf1c35c2
diff --git a/patches/allow-old-autoconf.patch b/patches/allow-old-autoconf.patch
index 7f4196f..ac26159 100644
--- a/patches/allow-old-autoconf.patch
+++ b/patches/allow-old-autoconf.patch
@@ -8,7 +8,7 @@ this is only needed on ubuntu focal
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/configure.ac b/configure.ac
-index f5801d9..a9f42ac 100644
+index 38c14ec..8a57bc3 100644
 --- a/configure.ac
 +++ b/configure.ac
 @@ -12,7 +12,7 @@ dnl
diff --git a/patches/disable-sem-check.diff b/patches/disable-sem-check.diff
index 4f5dc42..352a7ec 100644
--- a/patches/disable-sem-check.diff
+++ b/patches/disable-sem-check.diff
@@ -9,10 +9,10 @@ Subject: disable-sem-check
  1 file changed, 22 insertions(+), 12 deletions(-)
 
 diff --git a/configure.ac b/configure.ac
-index 2c0d9b2..7e834b0 100644
+index b58b012..b5b933e 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -5832,12 +5832,17 @@ AC_CACHE_CHECK([whether POSIX semaphores are enabled], [ac_cv_posix_semaphores_e
+@@ -5839,12 +5839,17 @@ AC_CACHE_CHECK([whether POSIX semaphores are enabled], [ac_cv_posix_semaphores_e
    [ac_cv_posix_semaphores_enabled=no],
    [ac_cv_posix_semaphores_enabled=yes])
  )
@@ -36,7 +36,7 @@ index 2c0d9b2..7e834b0 100644
  
  dnl Multiprocessing check for broken sem_getvalue
  AC_CACHE_CHECK([for broken sem_getvalue], [ac_cv_broken_sem_getvalue],
-@@ -5869,12 +5874,17 @@ AC_CACHE_CHECK([for broken sem_getvalue], [ac_cv_broken_sem_getvalue],
+@@ -5876,12 +5881,17 @@ AC_CACHE_CHECK([for broken sem_getvalue], [ac_cv_broken_sem_getvalue],
    [ac_cv_broken_sem_getvalue=yes],
    [ac_cv_broken_sem_getvalue=yes])
  )
diff --git a/patches/link-opt.diff b/patches/link-opt.diff
index 461d4c9..824f2a4 100644
--- a/patches/link-opt.diff
+++ b/patches/link-opt.diff
@@ -9,10 +9,10 @@ Subject: link-opt
  1 file changed, 3 insertions(+), 3 deletions(-)
 
 diff --git a/configure.ac b/configure.ac
-index 7325d00..2c0d9b2 100644
+index 0f60c84..b58b012 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -3377,8 +3377,8 @@ then
+@@ -3384,8 +3384,8 @@ then
  		LDSHARED='$(CC) -shared'
  		LDCXXSHARED='$(CXX) -shared';;
  	Linux*|GNU*|QNX*|VxWorks*|Haiku*)
@@ -23,7 +23,7 @@ index 7325d00..2c0d9b2 100644
  	FreeBSD*)
  		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
  		then
-@@ -3491,7 +3491,7 @@ then
+@@ -3498,7 +3498,7 @@ then
  	    LINKFORSHARED="-Wl,-E -Wl,+s";;
  #	    LINKFORSHARED="-Wl,-E -Wl,+s -Wl,+b\$(BINLIBDEST)/lib-dynload";;
  	Linux-android*) LINKFORSHARED="-pie -Xlinker -export-dynamic";;
diff --git a/patches/sysconfigdata-name.patch b/patches/sysconfigdata-name.patch
index 9d30fe3..277fbcf 100644
--- a/patches/sysconfigdata-name.patch
+++ b/patches/sysconfigdata-name.patch
@@ -45,7 +45,7 @@ index c1c0c01..fb12309 100644
  	@ # Build PYC files for the 3 optimization levels (0, 1, 2)
  	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 diff --git a/configure.ac b/configure.ac
-index 7e834b0..f5801d9 100644
+index b5b933e..38c14ec 100644
 --- a/configure.ac
 +++ b/configure.ac
 @@ -164,7 +164,7 @@ AC_ARG_WITH([build-python],