diff --git a/README b/README
index 0905fe5b..8ce949a2 100644
--- a/README
+++ b/README
@@ -37,7 +37,7 @@ The following optional dependencies increase the available
 functionality
 
     Cyrus-SASL
-    libcacard      >= 0.1.2             (Smartcard support)
+    libcacard      >= 2.5.1             (Smartcard support)
     Opus           >= 1.0.0             (Opus audio encoding support)
     LZ4                                 (LZ4 compression support)
     GStreamer      >= 1.0.0
diff --git a/configure.ac b/configure.ac
index 604a41b2..9a8f4504 100644
--- a/configure.ac
+++ b/configure.ac
@@ -158,7 +158,7 @@ AS_VAR_APPEND([SPICE_NONPKGCONFIG_LIBS], [" -pthread $LIBM $LIBRT"])
 SPICE_REQUIRES=""
 
 AS_IF([test x"$have_smartcard" = "xyes"], [
-    AS_VAR_APPEND([SPICE_REQUIRES], [" libcacard >= 0.1.2"])
+    AS_VAR_APPEND([SPICE_REQUIRES], [" libcacard >= 2.5.1"])
 ])
 
 SPICE_PROTOCOL_MIN_VER=0.12.16