diff --git a/baselibs.conf b/baselibs.conf
index b19aee5..ddd1161 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1,4 +1,4 @@
-libmuparser2_3_3
+libmuparser2_3_4
 muparser-devel
-	requires "libmuparser2_3_3-<targettype> = <version>"
+	requires "libmuparser2_3_4-<targettype> = <version>"
 
diff --git a/muparser.changes b/muparser.changes
index 217c845..afaa99c 100644
--- a/muparser.changes
+++ b/muparser.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Nov 15 19:31:50 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 2.3.4
+  * build: resolve sprintf deprecation warnings
+
 -------------------------------------------------------------------
 Sat Jan 22 21:00:46 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/muparser.spec b/muparser.spec
index e32505c..ad8132e 100644
--- a/muparser.spec
+++ b/muparser.spec
@@ -17,14 +17,14 @@
 
 
 Name:           muparser
-%define lname	libmuparser2_3_3
-Version:        2.3.3.1
+%define lname	libmuparser2_3_4
+Version:        2.3.4
 Release:        0
 Summary:        A math parser library
 License:        MIT
 Group:          Productivity/Scientific/Math
 URL:            http://muparser.beltoforion.de/
-Source:         https://github.com/beltoforion/muparser/archive/v2.3.3-1.tar.gz
+Source:         https://github.com/beltoforion/muparser/archive/v%version.tar.gz
 Patch0:         muparser-abiversion.diff
 Source1:        baselibs.conf
 BuildRequires:  cmake
@@ -57,11 +57,10 @@ works by transforming a mathematical expression into bytecode and
 precalculating constant parts of the expression.
 
 %prep
-%autosetup -p1 -n %name-2.3.3-1
+%autosetup -p1
 
 %build
-%cmake \
-    -DCMAKE_INSTALL_PREFIX=%{_prefix}
+%cmake -DCMAKE_INSTALL_PREFIX="%_prefix"
 %cmake_build
 
 %install
diff --git a/v2.3.3-1.tar.gz b/v2.3.3-1.tar.gz
deleted file mode 100644
index e97f397..0000000
--- a/v2.3.3-1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:91d26d8274ae9cd9c776ee58250aeddc6b574f369eafd03b25045b858a2b8177
-size 112100
diff --git a/v2.3.4.tar.gz b/v2.3.4.tar.gz
new file mode 100644
index 0000000..7336274
--- /dev/null
+++ b/v2.3.4.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c3fa54a3ebf36dda0ed3e7cd5451c964afbb15102bdbcba08aafb359a290121
+size 112693