diff --git a/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/files/fix-wrong-cast.patch b/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/files/fix-wrong-cast.patch
deleted file mode 100644
index f2938e0..0000000
--- a/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/files/fix-wrong-cast.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-Fix strict aliasing issue of gcc10
-
-fixes:
-
-TpmFail.c: In function 'TpmLogFailure':
-TpmFail.c:217:23: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
-  217 |     s_failFunction = *(UINT32 *)&function; /* kgold */
-      |                       ^~~~~~~~~~~~~~~~~~~
-cc1: all warnings being treated as errors
-
-Upstream-Status: Submitted
-
-Signed-off-by: Jens Rehsack <sno@NetBSD.org>
-
-Index: src/TpmFail.c
-===================================================================
---- src.orig/TpmFail.c	2020-09-10 15:43:57.085063875 +0200
-+++ src/TpmFail.c	2020-09-10 15:48:35.563302634 +0200
-@@ -214,7 +214,7 @@
-     // On a 64-bit machine, this may truncate the address of the string
-     // of the function name where the error occurred.
- #if FAIL_TRACE
--    s_failFunction = *(UINT32 *)&function;	/* kgold */
-+    memcpy(&s_failFunction, function, sizeof(uint32_t));	/* kgold */
-     s_failLine = line;
- #else
-     s_failFunction = 0;
diff --git a/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1637.bb b/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1661.bb
similarity index 68%
rename from meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1637.bb
rename to meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1661.bb
index 301980d..7ea40a8 100644
--- a/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1637.bb
+++ b/meta-security/meta-tpm/recipes-tpm2/ibmswtpm2/ibmswtpm2_1661.bb
@@ -17,13 +17,11 @@
 
 SRC_URI = "https://sourceforge.net/projects/ibmswtpm2/files/ibmtpm${PV}.tar.gz \
            file://tune-makefile.patch \
-           file://fix-wrong-cast.patch \
            "
-SRC_URI[md5sum] = "43b217d87056e9155633925eb6ef749c"
-SRC_URI[sha256sum] = "dd3a4c3f7724243bc9ebcd5c39bbf87b82c696d1c1241cb8e5883534f6e2e327"
-SRC_URI[sha1sum] = "ab4b94079e57a86996991e8a2b749ce063e4ad3e"
-SRC_URI[sha384sum] = "bbef16a934853ce78cba7ddc766aa9d7ef3cde3430a322b1be772bf3ad4bd6d413ae9c4de21bc1a4879d17dfe2aadc1d"
-SRC_URI[sha512sum] = "007aa415cccf19a2bcf789c426727dc4032dcb04cc9d11eedc231d2add708c1134d3d5ee5cfbe7de68307c95fff7a30bd306fbd8d53c198a5ef348440440a6ed"
+
+SRC_URI[sha256sum] = "55145928ad2b24f34be6a0eacf9fb492e10e0ea919b8428c721fa970e85d6147"
+
+UPSTREAM_CHECK_REGEX = "libtpm(?P<pver>).tar.gz"
 
 S = "${WORKDIR}/src"