diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0015adc7..dfff4a37 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -750,7 +750,9 @@ endif(MDBX_INSTALL_STATIC)
 ################################################################################
 
 # collect options & build info
-string(TIMESTAMP MDBX_BUILD_TIMESTAMP UTC)
+if(NOT DEFINED MDBX_BUILD_TIMESTAMP)
+  string(TIMESTAMP MDBX_BUILD_TIMESTAMP UTC)
+endif()
 set(MDBX_BUILD_FLAGS ${CMAKE_C_FLAGS})
 if(MDBX_BUILD_CXX)
   set(MDBX_BUILD_FLAGS ${CMAKE_CXX_FLAGS})
diff --git a/ChangeLog.md b/ChangeLog.md
index 24dd621e..fce9260a 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -17,6 +17,10 @@ ChangeLog
  - Finalize C++ API (few typos and trivia bugs are still likely for now).
  - Packages for [Astra Linux](https://astralinux.ru/), [ALT Linux](https://www.altlinux.org/), [ROSA Linux](https://www.rosalinux.ru/), etc.
 
+New features:
+
+ - Allow to predefine/override `MDBX_BUILD_TIMESTAMP` for builds reproducibility (https://github.com/erthink/libmdbx/issues/201).
+
 
 ## v0.10.1 at 2021-06-01
 
diff --git a/GNUmakefile b/GNUmakefile
index 01f52189..15d1d52f 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -29,7 +29,8 @@ INSTALL ?= install
 CC      ?= gcc
 CFLAGS_EXTRA ?=
 LD      ?= ld
-MDBX_BUILD_OPTIONS ?= -DNDEBUG=1
+MDBX_BUILD_OPTIONS ?=-DNDEBUG=1
+MDBX_BUILD_TIMESTAMP ?=$(shell date +%Y-%m-%dT%H:%M:%S%z)
 CFLAGS  ?= -std=gnu11 -O2 -g -Wall -Werror -Wextra -Wpedantic -ffunction-sections -fPIC -fvisibility=hidden -pthread -Wno-error=attributes $(CFLAGS_EXTRA)
 # -Wno-tautological-compare
 CXX     ?= g++
@@ -123,7 +124,8 @@ help:
 #< dist-cutoff-end
 
 show-options:
-	@echo "  MDBX_BUILD_OPTIONS =$(MDBX_BUILD_OPTIONS)"
+	@echo "  MDBX_BUILD_OPTIONS   = $(MDBX_BUILD_OPTIONS)"
+	@echo "  MDBX_BUILD_TIMESTAMP = $(MDBX_BUILD_TIMESTAMP)"
 	@echo '## TIP: Use `make options` to listing available build options.'
 	@echo "  CFLAGS   =$(CFLAGS)"
 	@echo "  CXXFLAGS =$(CXXFLAGS)"
@@ -149,7 +151,8 @@ options:
 	@echo "  EXE_LDFLAGS  =$(EXE_LDFLAGS)"
 	@echo "  LIBS         =$(LIBS)"
 	@echo ""
-	@echo "  MDBX_BUILD_OPTIONS =$(MDBX_BUILD_OPTIONS)"
+	@echo "  MDBX_BUILD_OPTIONS   = $(MDBX_BUILD_OPTIONS)"
+	@echo "  MDBX_BUILD_TIMESTAMP = $(MDBX_BUILD_TIMESTAMP)"
 	@echo ""
 	@echo "## Assortment items for MDBX_BUILD_OPTIONS:"
 	@echo "##   Note that the defaults should already be correct for most platforms;"
@@ -198,7 +201,7 @@ MAN_SRCDIR := man1/
 
 config.h: mdbx.c $(lastword $(MAKEFILE_LIST))
 	@echo '  MAKE $@'
-	$(QUIET)(echo '#define MDBX_BUILD_TIMESTAMP "$(shell date +%Y-%m-%dT%H:%M:%S%z)"' \
+	$(QUIET)(echo '#define MDBX_BUILD_TIMESTAMP "$(MDBX_BUILD_TIMESTAMP)"' \
 	&& echo '#define MDBX_BUILD_FLAGS "$(CXXSTD) $(CFLAGS) $(LDFLAGS) $(LIBS)"' \
 	&& echo '#define MDBX_BUILD_COMPILER "$(shell (LC_ALL=C $(CC) --version || echo 'Please use GCC or CLANG compatible compiler') | head -1)"' \
 	&& echo '#define MDBX_BUILD_TARGET "$(shell set -o pipefail; (LC_ALL=C $(CC) -v 2>&1 | grep -i '^Target:' | cut -d ' ' -f 2- || (LC_ALL=C $(CC) --version | grep -qi e2k && echo E2K) || echo 'Please use GCC or CLANG compatible compiler') | head -1)"' \
@@ -388,7 +391,7 @@ src/version.c: src/version.c.in $(lastword $(MAKEFILE_LIST)) $(git_DIR)/HEAD $(g
 
 src/config.h: src/version.c $(lastword $(MAKEFILE_LIST))
 	@echo '  MAKE $@'
-	$(QUIET)(echo '#define MDBX_BUILD_TIMESTAMP "$(shell date +%Y-%m-%dT%H:%M:%S%z)"' \
+	$(QUIET)(echo '#define MDBX_BUILD_TIMESTAMP "$(MDBX_BUILD_TIMESTAMP)"' \
 	&& echo '#define MDBX_BUILD_FLAGS "$(CXXSTD) $(CFLAGS) $(LDFLAGS) $(LIBS)"' \
 	&& echo '#define MDBX_BUILD_COMPILER "$(shell (LC_ALL=C $(CC) --version || echo 'Please use GCC or CLANG compatible compiler') | head -1)"' \
 	&& echo '#define MDBX_BUILD_TARGET "$(shell set -o pipefail; (LC_ALL=C $(CC) -v 2>&1 | grep -i '^Target:' | cut -d ' ' -f 2- || (LC_ALL=C $(CC) --version | grep -qi e2k && echo E2K) || echo 'Please use GCC or CLANG compatible compiler') | head -1)"' \
diff --git a/src/core.c b/src/core.c
index 500e481c..b08a00f4 100644
--- a/src/core.c
+++ b/src/core.c
@@ -21978,7 +21978,7 @@ __dll_export
 #ifdef MDBX_BUILD_TIMESTAMP
     MDBX_BUILD_TIMESTAMP
 #else
-    __DATE__ " " __TIME__
+    "\"" __DATE__ " " __TIME__ "\""
 #endif /* MDBX_BUILD_TIMESTAMP */
 
     ,