diff --git a/llvm15.changes b/llvm15.changes
index fa9d5cf..12ea80c 100644
--- a/llvm15.changes
+++ b/llvm15.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Mar  6 03:20:24 UTC 2024 - Michael Gorse <mgorse@suse.com>
+
+- Explicitly define PYTHON3_EXECUTABLE, since python 3.11 is being
+  pulled in by cmake in SLE-15-SP6.
+
 -------------------------------------------------------------------
 Mon Mar  4 21:29:51 UTC 2024 - Aaron Puchert <aaronpuchert@alice-dsl.net>
 
diff --git a/llvm15.spec b/llvm15.spec
index 8841c5e..1523b70 100644
--- a/llvm15.spec
+++ b/llvm15.spec
@@ -958,6 +958,7 @@ avail_mem=$(awk '/MemAvailable/ { print $2 }' /proc/meminfo)
     -DLLVM_PARALLEL_LINK_JOBS="$max_link_jobs" \
     -DENABLE_LINKER_BUILD_ID=ON \
     -DLLVM_BINUTILS_INCDIR=%{_includedir} \
+    -DPython3_EXECUTABLE=%{_bindir}/python3 \
     -DLLVM_BUILD_TOOLS:BOOL=OFF \
     -DLLVM_BUILD_UTILS:BOOL=OFF \
     -DLLVM_BUILD_EXAMPLES:BOOL=OFF \
@@ -1051,6 +1052,7 @@ export LD_LIBRARY_PATH=%{sourcedir}/build/%{_lib}
     -DLLVM_ENABLE_RTTI:BOOL=ON \
     -DLLVM_ENABLE_PIC=ON \
     -DLLVM_BINUTILS_INCDIR=%{_includedir} \
+    -DPython3_EXECUTABLE=%{_bindir}/python3 \
     -DLLVM_ENABLE_ZSTD:BOOL=OFF \
     -DLLVM_TARGETS_TO_BUILD=%{llvm_targets} \
     -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=%{llvm_experimental_targets} \