diff --git a/distro/debian/dms-git/debian/rules b/distro/debian/dms-git/debian/rules
index 05037d45..ecfa6fde 100755
--- a/distro/debian/dms-git/debian/rules
+++ b/distro/debian/dms-git/debian/rules
@@ -27,12 +27,12 @@ override_dh_auto_build:
 	# Verify core directory exists (native package format has source at root)
 	test -d core || (echo "ERROR: core directory not found!" && exit 1)
 
-	# Patch go.mod to use Go 1.24 base version (Debian 13 has 1.23.x, may vary)
-	sed -i 's/^go 1\.24\.[0-9]*/go 1.24/' core/go.mod
+	# Pin go.mod and vendor/modules.txt to the installed Go toolchain version
+	GO_INSTALLED=$$(go version | grep -oP 'go\K[0-9]+\.[0-9]+'); \
+	sed -i "s/^go [0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$$/go $${GO_INSTALLED}/" core/go.mod; \
+	sed -i "s/^\(## explicit; go \)[0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$$/\1$${GO_INSTALLED}/" core/vendor/modules.txt
 
-	# Build dms-cli from source using vendored dependencies
-	# Extract version info and build in single shell to preserve variables
-	# Architecture mapping: Debian amd64/arm64 -> Makefile amd64/arm64
+	# Build dms-cli (single shell to preserve variables; arch: Debian amd64/arm64 -> Makefile amd64/arm64)
 	VERSION="$(UPSTREAM_VERSION)"; \
 	COMMIT=$$(echo "$(UPSTREAM_VERSION)" | grep -oP '(?<=git)[0-9]+\.[a-f0-9]+' | cut -d. -f2 | head -c8 || echo "unknown"); \
 	if [ "$(DEB_HOST_ARCH)" = "amd64" ]; then \
diff --git a/distro/fedora/dms-git.spec b/distro/fedora/dms-git.spec
index 685f3f8e..083ae225 100644
--- a/distro/fedora/dms-git.spec
+++ b/distro/fedora/dms-git.spec
@@ -28,7 +28,7 @@ Requires:       accountsservice
 Requires:       dms-cli = %{epoch}:%{version}-%{release}
 Requires:       dgop
 
-# Core utilities (Highly recommended for DMS functionality)
+# Core utilities (Recommended for DMS functionality)
 Recommends:     cava
 Recommends:     danksearch
 Recommends:     matugen
@@ -65,6 +65,13 @@ Provides native DBus bindings, NetworkManager integration, and system utilities.
 VERSION="%{version}"
 COMMIT=$(echo "%{version}" | grep -oP '[a-f0-9]{7,}' | head -n1 || echo "unknown")
 
+# Pin go.mod and vendor/modules.txt to the installed Go toolchain version
+GO_INSTALLED=$(go version | grep -oP 'go\K[0-9]+\.[0-9]+')
+sed -i "s/^go [0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/go ${GO_INSTALLED}/" core/go.mod
+# Only patch vendor/modules.txt when a vendor dir exists (OBS/offline builds)
+[ -f core/vendor/modules.txt ] && \
+  sed -i "s/^\(## explicit; go \)[0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/\1${GO_INSTALLED}/" core/vendor/modules.txt || true
+
 cd core
 make dist VERSION="$VERSION" COMMIT="$COMMIT"
 
diff --git a/distro/opensuse/dms-git.spec b/distro/opensuse/dms-git.spec
index 94ddc985..17d26398 100644
--- a/distro/opensuse/dms-git.spec
+++ b/distro/opensuse/dms-git.spec
@@ -55,8 +55,10 @@ mkdir -p $HOME $GOCACHE $GOMODCACHE
 # OBS has no network access, so use local toolchain only
 export GOTOOLCHAIN=local
 
-# Patch go.mod to use base Go version (e.g., go 1.24 instead of go 1.24.6)
-sed -i 's/^go 1\.24\.[0-9]*/go 1.24/' core/go.mod
+# Pin go.mod and vendor/modules.txt to the installed Go toolchain version
+GO_INSTALLED=$(go version | grep -oP 'go\K[0-9]+\.[0-9]+')
+sed -i "s/^go [0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/go ${GO_INSTALLED}/" core/go.mod
+sed -i "s/^\(## explicit; go \)[0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/\1${GO_INSTALLED}/" core/vendor/modules.txt
 
 # Extract version info for embedding in binary
 VERSION="%{version}"