diff --git a/contrib/ci/Dockerfiles/z3_build.Dockerfile b/contrib/ci/Dockerfiles/z3_build.Dockerfile
index 562c2dfe5..152b109d7 100644
--- a/contrib/ci/Dockerfiles/z3_build.Dockerfile
+++ b/contrib/ci/Dockerfiles/z3_build.Dockerfile
@@ -16,6 +16,7 @@ ARG PYTHON_BINDINGS
 ARG PYTHON_EXECUTABLE=/usr/bin/python2.7
 ARG RUN_SYSTEM_TESTS
 ARG RUN_UNIT_TESTS
+ARG SANITIZER_PRINT_SUPPRESSIONS
 ARG TARGET_ARCH
 ARG TEST_INSTALL
 ARG UBSAN_BUILD
@@ -42,6 +43,7 @@ ENV \
   NO_SUPPRESS_OUTPUT=${NO_SUPPRESS_OUTPUT} \
   PYTHON_BINDINGS=${PYTHON_BINDINGS} \
   PYTHON_EXECUTABLE=${PYTHON_EXECUTABLE} \
+  SANITIZER_PRINT_SUPPRESSIONS=${SANITIZER_PRINT_SUPPRESSIONS} \
   RUN_SYSTEM_TESTS=${RUN_SYSTEM_TESTS} \
   RUN_UNIT_TESTS=${RUN_UNIT_TESTS} \
   TARGET_ARCH=${TARGET_ARCH} \
diff --git a/contrib/ci/README.md b/contrib/ci/README.md
index 99bbcd7a6..95ed7f398 100644
--- a/contrib/ci/README.md
+++ b/contrib/ci/README.md
@@ -32,6 +32,7 @@ the future.
 * `PYTHON_BINDINGS` - Build and test Python API bindings (`0` or `1`)
 * `RUN_SYSTEM_TESTS` - Run system tests (`0` or `1`)
 * `RUN_UNIT_TESTS` - Run unit tests (`BUILD_ONLY` or `BUILD_AND_RUN` or `SKIP`)
+* `SANITIZER_PRINT_SUPPRESSIONS` - Show ASan/UBSan suppressions (`0` or `1`)
 * `TARGET_ARCH` - Target architecture (`x86_64` or `i686`)
 * `TEST_INSTALL` - Test running `install` target (`0` or `1`)
 * `UBSAN_BUILD` - Do [UndefinedBehaviourSanitizer](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html) build (`0` or `1`)
diff --git a/contrib/ci/scripts/ci_defaults.sh b/contrib/ci/scripts/ci_defaults.sh
index 076d70180..2029981c0 100644
--- a/contrib/ci/scripts/ci_defaults.sh
+++ b/contrib/ci/scripts/ci_defaults.sh
@@ -11,6 +11,10 @@ export NO_SUPPRESS_OUTPUT="${NO_SUPPRESS_OUTPUT:-0}"
 export PYTHON_BINDINGS="${PYTHON_BINDINGS:-1}"
 export RUN_SYSTEM_TESTS="${RUN_SYSTEM_TESTS:-1}"
 export RUN_UNIT_TESTS="${RUN_UNIT_TESTS:-BUILD_AND_RUN}"
+# Don't print suppressions by default because that breaks the Z3
+# regression tests because they don't expect them to appear in Z3's
+# output.
+export SANITIZER_PRINT_SUPPRESSIONS="${SANITIZER_PRINT_SUPPRESSIONS:-0}"
 export TARGET_ARCH="${TARGET_ARCH:-x86_64}"
 export TEST_INSTALL="${TEST_INSTALL:-1}"
 export UBSAN_BUILD="${UBSAN_BUILD:-0}"
diff --git a/contrib/ci/scripts/sanitizer_env.sh b/contrib/ci/scripts/sanitizer_env.sh
index 0499eb268..959f136e5 100644
--- a/contrib/ci/scripts/sanitizer_env.sh
+++ b/contrib/ci/scripts/sanitizer_env.sh
@@ -7,11 +7,18 @@
 
 if [ "X${ASAN_BUILD}" = "X1" ]; then
   # Use suppression files
-  export LSAN_OPTIONS="print_suppressions=1,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/lsan.txt"
+  export LSAN_OPTIONS="suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/lsan.txt"
   # NOTE: If you get bad stacktraces try using `fast_unwind_on_malloc=0`
   # NOTE: `malloc_context_size` controls size of recorded stacktrace for allocations.
   #       If the reported stacktraces appear incomplete try increasing the value.
-  export ASAN_OPTIONS="malloc_context_size=100,print_suppressions=1,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/asan.txt"
+  export ASAN_OPTIONS="malloc_context_size=100,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/asan.txt"
+
+  : ${SANITIZER_PRINT_SUPPRESSIONS?"SANITIZER_PRINT_SUPPRESSIONS must be specified"}
+  if [ "X${SANITIZER_PRINT_SUPPRESSIONS}" = "X1" ]; then
+    export LSAN_OPTIONS="${LSAN_OPTIONS},print_suppressions=1"
+    export ASAN_OPTIONS="${ASAN_OPTIONS},print_suppressions=1"
+  fi
+
   : ${ASAN_SYMBOLIZER_PATH?"ASAN_SYMBOLIZER_PATH must be specified"}
 
   # Run command without checking for leaks
@@ -61,5 +68,10 @@ if [ "X${UBSAN_BUILD}" = "X1" ]; then
   # `halt_on_error=1,abort_on_error=1` means that on the first UBSan error
   # the program will terminate by calling `abort(). Without this UBSan will
   # allow execution to continue. We also use a suppression file.
-  export UBSAN_OPTIONS="halt_on_error=1,abort_on_error=1,print_suppressions=1,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/ubsan.txt"
+  export UBSAN_OPTIONS="halt_on_error=1,abort_on_error=1,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/ubsan.txt"
+
+  : ${SANITIZER_PRINT_SUPPRESSIONS?"SANITIZER_PRINT_SUPPRESSIONS must be specified"}
+  if [ "X${SANITIZER_PRINT_SUPPRESSIONS}" = "X1" ]; then
+    export UBSAN_OPTIONS="${UBSAN_OPTIONS},print_suppressions=1"
+  fi
 fi
diff --git a/contrib/ci/scripts/travis_ci_linux_entry_point.sh b/contrib/ci/scripts/travis_ci_linux_entry_point.sh
index d60b06f8f..352e13de0 100755
--- a/contrib/ci/scripts/travis_ci_linux_entry_point.sh
+++ b/contrib/ci/scripts/travis_ci_linux_entry_point.sh
@@ -88,6 +88,10 @@ if [ -n "${ASAN_DSO}" ]; then
   BUILD_OPTS+=("--build-arg" "ASAN_DSO=${ASAN_DSO}")
 fi
 
+if [ -n "${SANITIZER_PRINT_SUPPRESSIONS}" ]; then
+  BUILD_OPTS+=("--build-arg" "SANITIZER_PRINT_SUPPRESSIONS=${SANITIZER_PRINT_SUPPRESSIONS}")
+fi
+
 if [ -n "${UBSAN_BUILD}" ]; then
   BUILD_OPTS+=("--build-arg" "UBSAN_BUILD=${UBSAN_BUILD}")
 fi